Publications

Yuting Tan, Pak Ki Henry Tsang, Vladimir Dobrosavljević and Louk Rademaker

Physical review research 5 4, 043190 (2023)

Recent experiments on TMD heterobilayers show a multitude of charge ordered phases, which are likely Wigner-Mott crystals. In this publication we study what happens if you dope away from the fractional fillings. This leads to yet more variety of exotic charge orders, from “standard” doped…

Fabian von Rohr

Chemistry of materials 35 22, 9455-9472 (2023)

The concept of topological superconductivity has attracted immense interest in the physics community recently for several reasons: First, topological superconductors represent new phases of matter, which are topologically distinct from any other known phase of matter. Second, their discovery would…

J. R. Hortensius, D. Afanasiev, L. Vistoli, M. Matthiesen, M. Bibes and Andrea Caviglia

APL materials 11 7, 071107 (2023)

In doped manganite systems, strong electronic correlations result in rich phase diagrams where electron delocalization strongly affects the magnetic order. Here, we employ a femtosecond all-optical pump-probe scheme to impulsively photodope the antiferromagnetic parent manganite system CaMnO3 and…

Francesco Barantani, Christophe Berthod and Dirk Van Der Marel

Physica. C, Superconductivity 613, 1354321 (2023)

Ivan Maggio-Aprile, Tejas Parasram Singar, Christophe Berthod, Tim Gazdic, Jens Erik Bruer and Christoph Renner

Physica. C, Superconductivity 615, 1354386 (2023)

The mechanism of high-temperature superconductivity remains one of the great challenges of contemporary physics. Here, we review efforts to image the vortex lattice in copper oxide-based high-temperature superconductors and to measure the characteristic electronic structure of the vortex core of a…

Maximilian Obst, Tobias Nörenberg, Gonzalo Álvarez-Pérez, Thales V. A. G. de Oliveira, Javier Taboada Gutierrez, Flávio H. Feres, Felix G. Kaps, Osama Hatem, Andrei Luferau, Alexey Y. Nikitin, J. Michael Klopf, Pablo Alonso-González, Susanne C. Kehr and Lukas M. Eng

ACS nano 17 19, 19313-19322 (2023)

Simone Fratini, Sergio Ciuchi, Vladimir Dobrosavljević and Louk Rademaker

Physical review letters 131 19, 196303 (2023)

We present a theory for band-tuned metal-insulator transitions based on the Kubo formalism. Such a transition exhibits scaling of the resistivity curves, in the regime where Tτ>1 or μτ>1, where τ is the scattering time and μ the chemical potential. At the critical value of the chemical…

D. Santos-Cottin, I. Mohelský, J. Wyzula, F. Le Mardelé, Itzik Kapon, S. Nasrallah, N. Barišić, I. Živković, J. r. Soh, F. Guo, K. Rigaux, M. Puppin, J. h. Dil, B. Gudac, Z. Rukelj, M. Novak, Alexey Kuzmenko, C. c. Homes, Tomasz Dietl, M. Orlita and Ana Akrap

Physical review letters 131 18, 186704 (2023)

Céline Lichtensteiger, Chia-Ping Su, Iaroslav Gaponenko, Marios Hadjimichael, Ludovica Tovaglieri, Patrycja Paruch, Alexandre Gloter and Jean-Marc Triscone

APL materials 11 10, 101110 (2023)

We investigate nanoscale domain engineering via epitaxial coupling in a set of SrRuO3/PbTiO3/SrRuO3 heterostructures epitaxially grown on (110)o-oriented DyScO3 substrates. The SrRuO3 layer thickness is kept at 55 unit cells, whereas the PbTiO3 layer is grown to thicknesses of 23, 45, and 90 unit…

Ishita Pushkarna, Arpad Pasztor and Christoph Renner

Nano letters, 3c02804 (2023)

Synthetic materials and heterostructures obtained by the controlled stacking of exfoliated monolayers are emerging as attractive functional materials owing to their highly tunable properties. We present a detailed scanning tunneling microscopy and spectroscopy study of single layer…

Yixi Zhou, Adrien Waelchli, Margherita Boselli, Iris Crassee, Adrien Bercher, Weiwei Luo, Jiahua Duan, J.l.m. van Mechelen, Dirk Van Der Marel, Jérémie Teyssier, Willem Rischau, Lukas Alexander Korosec, Stefano Gariglio, Jean-Marc Triscone and Alexey Kuzmenko

Nature communications 14 1, 7686 (2023)

Phonon polaritons are promising for infrared applications due to a strong light-matter coupling and subwavelength energy confinement they offer. Yet, the spectral narrowness of the phonon bands and difficulty to tune the phonon polariton properties hinder further progress in this field. SrTiO…

Zizhuo Tony Jin, Joao Dos Santos Ferreira, Michel Bauer, Michele Filippone and Thierry Giamarchi

Physical Review Research 5 1, 013033 (2023)

We devise a semiclassical model to describe the transport properties of low-dimensional fermionic lattices under the influence of external quantum stochastic noise. These systems behave as quantum stochastic resistors, where the bulk particle transport is diffusive and obeys the Ohm/Fick’s law….

Saptarshi Majumdar, Laura Foini, Thierry Giamarchi and Alberto Rosso

Physical Review B 108 20, 205138 (2023)

We study an incommensurate XXZ spin chain coupled to a collection of local harmonic baths. At zero temperature, by varying the strength of the coupling to the bath the chain undergoes a quantum phase transition between a Luttinger liquid phase and a spin-density wave (SDW). Our results are…

Saptarshi Majumdar, Laura Foini, Thierry Giamarchi and Alberto Rosso

Physical Review B 107 16, 165113 (2023)

We study an XXZ spin chain, where each spin is coupled to an independent ohmic bath of harmonic oscillators at zero temperature. Using bosonization and numerical techniques, we show the existence of two phases separated by a Kosterlitz-Thouless transition. At low coupling with the bath, the chain…

Zizhuo Tony Jin, Paola Ruggiero and Thierry Giamarchi

Physical Review B 107 20, L201111 (2023)

Hepeng Yao, Lorenzo Pizzino and Thierry Giamarchi

SciPost Physics 15 2, 050 (2023)

We study a two dimensional (2D) system of interacting quantum bosons, subjected to a continuous periodic potential in one direction. The correlation of such system exhibits a dimensional crossover between a canonical 2D behavior with Berezinski-Kosterlitz-Thouless (BKT) properties and a…

Zhaoxuan Zhu, Hepeng Yao and Laurent Sanchez-Palencia

Physical Review Letters 130 22, 220402 (2023)

Quantum simulation of quasicrystals in synthetic bosonic matter now paves the way for the exploration of these intriguing systems in wide parameter ranges. Yet thermal fluctuations in such systems compete with quantum coherence and significantly affect the zero-temperature quantum phases. Here we…

T.-W. Zhou, G. Cappellini, D. Tusi, L. Franchi, J. Parravicini, C. Repellin, Sebastian Greschner, M. Inguscio, Thierry Giamarchi, M. Filippone, J. Catani and L. Fallani

Science 381 6656, 427-430 (2023)

The Hall effect, which originates from the motion of charged particles in magnetic fields, has deep consequences for the description of materials, extending far beyond condensed matter. Understanding such an effect in interacting systems represents a fundamental challenge, even for small magnetic…

Khalil Zakeri, Dominik Rau, Jasmin Jandke, Fang Yang, Wulf Wulfhekel and Christophe Berthod

ACS Nano 17 10, 9575-9585 (2023)

A.-M. Visuri, Thierry Giamarchi and C. Kollath

Physical Review Research 5 1, 013195 (2023)

Chen-How Huang, Thierry Giamarchi and Miguel A. Cazalilla

Physical Review Research 5 4, 043192 (2023)

Shintaro Takayoshi, Quentin Faure, Virginie Simonet, Béatrice Grenier, Sylvain Petit, Jacques Ollivier, Pascal Lejay and Thierry Giamarchi

Physical Review Research 5 2, 023205 (2023)

Anne-Maria Visuri, Jeffrey Mohan, Shun Uchino, Meng-Zi Huang, Tilman Esslinger and Thierry Giamarchi

Physical review Research 5 3, 033095 (2023)

Gunnar Bollmark, Thomas Köhler, Lorenzo Pizzino, Yiqi Yang, Johannes S. Hofmann, Hao Shi, Shiwei Zhang, Thierry Giamarchi and Adrian Kantian

Physical Review X 13 1, 011039 (2023)

Nirvana Belen Caballero, Karsten Kruse and Thierry Giamarchi

Physical Review E 108 1, L012801 (2023)

Catalin-Mihai Halati, Zhe Wang, Thomas Lorenz, Corinna Kollath and Jean-Sébastien Bernier

Physical Review B 108 22, 200404, x (2023)

Catalin-Mihai Halati and Thierry Giamarchi

Physical Review Research 5 1, 013126 (2023)

Meng-Zi Huang, Jeffrey Mohan, Anne-Maria Visuri, Philipp Fabritius, Mohsen Talebi, Simon Wili, Shun Uchino, Thierry Giamarchi and Tilman Esslinger

Physical Review Letters 130 20, 200404 (2023)

Lorenzo Gotta, Sanjay Moudgalya and Leonardo Mazza

Physical Review Letters 131 19, 190401 (2023)

Marios Hadjimichael, Bernat Mundet Bolos, Claribel Dominguez Ordonez, Adrien Waelchli, Gabriele De Luca, Jonathan Spring, Simon Jöhr, Siobhan Mckeown Walker, Cinthia Piamonteze, Duncan T. L. Alexander, Jean-Marc Triscone and Marta Gibert

Advanced Electronic Materials, 2201182 (2023)

Chuanwu Cao, Margherita Melegari, Marc Philippi, Daniil Domaretskiy, Nicolas Ubrig, Ignacio Gutierrez Lezama and Alberto Morpurgo

Advanced materials, 2211993 (2023)

Francesco Barantani

Thèse (2023)

Complex systems exhibit emergent properties characterized by fascinating phenomena. These are a direct consequence of the interplay among different constituents and cannot simply be reduced to independent contributions. In the study of materials, the number of particles that have to be considered…

Gianmarco Gatti, Julia Issing, Louk Rademaker, Florian Margot, Tobias A. de Jong, Sense Jan van der Molen, Jérémie Teyssier, Timur K. Kim, Matthew D. Watson, Cephise Cacho, Pavel Dudin, José Avila, Kumara Cordero Edwards, Patrycja Paruch, Nicolas Ubrig, Ignacio Gutierrez Lezama, Alberto Morpurgo, Anna Tamai and Felix Baumberger

Physical review letters 131 4, 046401 (2023)

The recent observation of correlated phases in transition metal dichalcogenide moir\’e systems at integer and fractional filling promises new insight into metal-insulator transitions and the unusual states of matter that can emerge near such transitions. Here, we combine real- and momentum-space…

Danyang Liu, Jens Oppliger, Aleš Cahlík, Catherine Witteveen, Fabian von Rohr and Fabian Donat Natterer

MethodsX 10, 101964 (2023)

Edouard Lesne, Yildiz G. Saǧlam, Raffaele Battilomo, Maria Teresa Mercaldo, Thierry C. van Thiel, Ulderico Filippozzi, Canio Noce, Mario Cuoco, Gary A. Steele, Carmine Ortix and Andrea Caviglia

Nature materials (2023)

Quantum materials can display physical phenomena rooted in the geometry of electronic wavefunctions. The corresponding geometric tensor is characterized by an emergent field known as the Berry curvature (BC). Large BCs typically arise when electronic states with different spin, orbital or…

Lucia Varbaro, Bernat Mundet Bolos, Claribel Dominguez Ordonez, Jennifer Fowlie, Alexandru Mircea Georgescu, Lukas Alexander Korosec, Duncan Alexander and Jean-Marc Triscone

Advanced electronic materials, 2201291 (2023)

Marco Bonura, Gianmarco Bovone, Pablo Cayado Llosa and Carmine Senatore

IEEE transactions on applied superconductivity 33 5 (2023)

Fan Wu, Marco Gibertini, Kenji Watanabe, Takashi Taniguchi, Ignacio Gutierrez Lezama, Nicolas Ubrig and Alberto Morpurgo

Advanced materials, 2211653 (2023)

Abolfazl Ziarati, Jiangtao Zhao, Jafar Afshani Aghajari, Rania Kazan, Ariel Francis Perez Mellor, Arnulf Rosspeintner, Siobhan Mckeown Walker and Thomas Buergi

Small 19 24, 2207857 (2023)

Despite enormous progress and improvement in photocatalytic CO ₂ reduction reaction (CO ₂ RR), the development of photocatalysts that suppress H ₂ evolution reaction (HER), during CO ₂ RR, remains still a challenge. Here, new insight is presented for…

Willem Rischau, Xu He, Giacomo Mazza, Stefano Gariglio, Jean-Marc Triscone, Philippe Ghosez and Javier Del Valle Granda

Physical review. B 107 11, 115139 (2023)

Pablo Cayado Llosa, Jens Hänisch, Kazumasa Iida and Carmine Senatore

Superconductor science and technology 36 9, 090401 (2023)

Lukas Grünewald, Pablo Cayado Llosa, Manuela Erbe, Jens Hänisch, Bernhard Holzapfel and Dagmar Gerthsen

Materials advances 4 24, 6507-6521 (2023)

The critical current density of superconducting rare-earth barium copper oxide (REBCO) thin films is enhanced by adding nanoparticles to generate artificial pinning centers. Barium-based perovskites are popular nanoparticle materials. Although typically considered chemically unreactive in the…

Florian Margot

Thèse, 136 (2023)

2D semiconducting materials represent an interesting opportunity for the desired scaling of electronic devices. Black phosphorus (PB) is a promising candidate because of its direct gap in the range of telecommunications wavelengths and a comparatively high room-temperature mobility that compares…

Valerio Gulino, Alessandro Longo, Laura M. de Kort, Hendrik P. Rodenburg, Fabrizio Murgia, Matteo Brighi, Radovan Cerny, Christoph J. Sahle, Martin Sundermann, Hlynur Gretarsson, Frank de Groot and Peter Ngene

Small methods 8 1, 2300833 (2023)

Solid‐state sodium ion conductors are crucial for the next generation of all‐solid‐state sodium batteries with high capacity, low cost, and improved safety. Sodium closo‐carbadodecaborate (NaCB ₁₁ H ₁₂ ) is an attractive Na‐ion conductor owing to its high thermal,…

Pablo Cayado Llosa, Devendra K. Namburi, Manuela Erbe, Jens Hänisch, David A. Cardwell, John H. Durrell and Bernhard Holzapfel

Applied physics. A, Materials science & processing 129 2, 137, 1-7 (2023)

Transport measurements performed on a cross-sectional slice prepared from a bulk GdBa ₂ Cu ₃ O _{7- x} -Ag single-grain superconductor of 25 mm in diameter are described and the results presented. The sample, which was fabricated via the buffer-assisted top-seeded…

Anas El Hamdi, Jean-Yves Chauleau, Margherita Boselli, Clémentine Thibault, Cosimo Gorini, Alexander Smogunov, Cyrille Barreteau, Stefano Gariglio, Jean-Marc Triscone and Michel Viret

Nature physics 19 12, 1855-1860 (2023)

Pablo Cayado Llosa, Marco Bonura, Celia Lucas Esparseil, Enora Saule, Hannes Rijckaert, Tommaso Bagni, Konstantina Konstantopoulou, Matteo Alessandrini and Carmine Senatore

Scientific reports 13 1, 16917 (2023)

We report the evolution of the superconducting properties of a commercial coated conductor during deoxygenation and reoxygenation processes. By analyzing the changes on the critical temperature, T _c , and critical current density, J _c , at 4 and 77 K, we have identified the…

Johannes Motruk, Dario Rossi, Dmitry Abanin and Louk Rademaker

Physical review research 5 2, L022049 (2023)

Dario Rossi, Johannes Motruk, Louk Rademaker and Dmitry Abanin

Physical review. B 108 14, 144406 (2023)

Andreas Ørsted, Sebastian Vestergaard Salling and Lars Diekhöner

Physical review. B 108 16, 165424 (2023)

Elisabetta Nocerino, Shintaro Kobayashi, Catherine Witteveen, Ola K. Forslund, Nami Matsubara, Chiu Tang, Takeshi Matsukawa, Akinori Hoshikawa, Akihiro Koda, Kazuyoshi Yoshimura, Izumi Umegaki, Yasmine Sassa, Fabian von Rohr, Vladimir Pomjakushin, Jess H. Brewer, Jun Sugiyama and Martin Månsson

Communications materials 4 1, 81 (2023)

LiCrSe ₂ constitutes a recent valuable addition to the ensemble of two-dimensional triangular lattice antiferromagnets. In this work, we present a comprehensive study of the low temperature nuclear and magnetic structure established in this material. Being subject to a strong…

Catherine Witteveen, Elisabetta Nocerino, Sara Almudena Lopez Paz, Harald O Jeschke, Vladimir Y Pomjakushin, Martin Månsson and Fabian von Rohr

JPhys materials 6 3, 035001 (2023)

We report on the synthesis of LiCrTe 2 single crystals and on their anisotropic magnetic properties. We have obtained these single crystals by employing a Te/Li-flux synthesis method. We find LiCrTe 2 to crystallize in a TlCdS 2 -type structure with cell parameters of a = 3.9512(5) Å and c =…

Björn Salzmann, Elina Hujala, Catherine Witteveen, Baptiste Hildebrand, Helmuth Berger, Fabian von Rohr, Christopher W. Nicholson and Claude Monney

Physical review materials 7 6, 064005 (2023)

Dorota Iwona Walicka, Robin Lefèvre, Olivier Blacque, Sara Almudena Lopez Paz, Willem Rischau, Antonio Cervellino, Carlos A. Triana and Fabian von Rohr

Physical review materials 7 7, 074805 (2023)

Teodor Luibrand, Adrien Bercher, Rodolfo Rocco, Farnaz Tahouni-Bonab, Lucia Varbaro, Willem Rischau, Claribel Dominguez Ordonez, Yixi Zhou, Weiwei Luo, Soumen Bag, Lorenzo Fratino, Reinhold Kleiner, Stefano Gariglio, Dieter Koelle, Jean-Marc Triscone, Marcelo J. Rozenberg, Alexey B. Kuzmenko, Stefan Guénon and Javier Del Valle Granda

Physical review research 5, 013108 (2023)

Mohammad Yazdani-Asrami, Wenjuan Song, Antonio Morandi, Giovanni De Carne, Joao Murta-Pina, Anabela Pronto, Roberto Oliveira, Francesco Grilli, Enric Pardo, Michael Parizh, Boyang Shen, Tim Coombs, Tiina Salmi, Di Wu, Eric Coatanea, Dominic A Moseley, Rodney A Badcock, Mengjie Zhang, Vittorio Marinozzi, Nhan Tran, Maciej Wielgosz, Andrzej Skoczeń, Dimitrios Tzelepis, Sakis Meliopoulos, Nuno Vilhena, Guilherme Sotelo, Zhenan Jiang, Veit Große, Tommaso Bagni, Diego Mauro, Carmine Senatore, Alexey Mankevich, Vadim Amelichev, Sergey Samoilenkov, Tiem Leong Yoon, Yao Wang, Renato P Camata, Cheng-Chien Chen, Ana Maria Madureira and Ajith Abraham

Superconductor science and technology 36 4, 043501 (2023)

This paper presents a roadmap to the application of AI techniques and big data (BD) for different modelling, design, monitoring, manufacturing and operation purposes of different superconducting applications. To help superconductivity researchers, engineers, and manufacturers understand the…

Mattias Matthiesen, Jorrit R. Hortensius, Samuel Mañas-Valero, Itzik Kapon, Dumitru Dumcenco, Enrico Giannini, Makars Šiškins, Boris A. Ivanov, Herre S. J. van der Zant, Eugenio Coronado, Alexey Kuzmenko, Dmytro Afanasiev and Andrea Caviglia

Physical review letters 130 7, 076702 (2023)

Maria Teresa Mercaldo, Canio Noce, Andrea Caviglia, Mario Cuoco and Carmine Ortix

npj quantum materials 8 12 (2023)

The Berry curvature (BC)—a quantity encoding the geometric properties of the electronic wavefunctions in a solid—is at the heart of different Hall-like transport phenomena, including the anomalous Hall and the non-linear Hall and Nernst effects. In non-magnetic quantum materials with acentric…

Céline Lichtensteiger, Marios Hadjimichael, Edoardo Zatterin, Chia-Ping Su, Iaroslav Gaponenko, Ludovica Tovaglieri, Patrycja Paruch, Alexandre Gloter and Jean-Marc Triscone

APL materials 11 6, 061126 (2023)

We study the complex ferroelastic/ferroelectric domain structure in the prototypical ferroelectric PbTiO3 epitaxially strained on (110)o-oriented DyScO3 substrates, using a combination of atomic force microscopy, laboratory and synchrotron x-ray diffraction, and high resolution scanning…

European physical journal. C, Particles and fields 83 9, 864 (2023)

A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges of producing muon collisions at high luminosity and 10 TeV centre of mass energy are being investigated by the recently-formed International Muon…

Gianmarco Bovone, Florin Buta, Francesco Lonardo, Tommaso Bagni, Marco Bonura, D. LeBoeuf, S.c. Hopkins, T. Boutboul, A. Ballarino and Carmine Senatore

Superconductor science and technology 36 9, 095018 (2023)

We successfully manufactured 12-filament rod-in-tube Nb$_{3}$Sn wires with oxide nanoparticles formed by the internal oxidation method. We employed Nb-7.5 wt%Ta-1 wt%Zr and Nb-7.5 wt%Ta-2 wt% Hf alloys along with oxygen sources (OSs) in two different configurations—in the core of Nb filaments…

Sandy Adhitia Ekahana, Genta Indra Winata, Y. Soh, Anna Tamai, Milan Radovic, Gabriel Aeppli and Ming Shi

Machine learning: science and technology (2023)

There is a growing recognition that electronic band structure is a local property of materials and devices, and there is steep growth in capabilities to collect the relevant data. New photon sources, from small-laboratory-based lasers to free electron lasers, together with focussing beam optics and …

Michael Dapolito, Makoto Tsuneto, Wenjun Zheng, Lukas Wehmeier, Suheng Xu, Xinzhong Chen, Jiacheng Sun, Zengyi Du, Yinming Shao, Ran Jing, Shuai Zhang, Adrien Bercher, Yinan Dong, Dorri Halbertal, Vibhu Ravindran, Zijian Zhou, Mila Petrovic, Adrian Gozar, G. L. Carr, Qiang Li, Alexey Kuzmenko, Michael M. Fogler, D. N. Basov, Xu Du and Mengkun Liu

Nature nanotechnology (2023)

Fengrui Yao, Volodymyr Multian, Zhe Wang, Nicolas Ubrig, Jérémie Teyssier, Fan Wu, Enrico Giannini, Marco Gibertini, Ignacio Gutierrez Lezama and Alberto Morpurgo

Nature communications 14 1, 4969 (2023)

In twisted two-dimensional (2D) magnets, the stacking dependence of the magnetic exchange interaction can lead to regions of ferromagnetic and antiferromagnetic interlayer order, separated by non-collinear, skyrmion-like spin textures. Recent experimental searches for these textures have focused on …

Fan Wu, Marco Gibertini, Kenji Watanabe, Takashi Taniguchi, Ignacio Gutierrez Lezama, Nicolas Ubrig and Alberto Morpurgo

Nano letters 23 17, 8140-8145 (2023)

Radovan Cerny, Matteo Brighi, Hui Wu, Wei Zhou, Mirjana Dimitrievska, Fabrizio Murgia, Valerio Gulino, Petra E. de Jongh, Benjamin A. Trump and Terrence J. Udovic

Molecules 28 5, 2296 (2023)

Thermal polymorphism in the alkali-metal salts incorporating the icosohedral monocarba-hydridoborate anion, CB11H12−, results in intriguing dynamical properties leading to superionic conductivity for the lightest alkali-metal analogues, LiCB11H12 and NaCB11H12. As such, these two have been the…

Andrea Garcia, Gian Müller, Radovan Cerny, Daniel Rentsch, Ryo Asakura, Corsin Battaglia and Arndt Remhof

Journal of materials chemistry. A 11 35, 18996-19003 (2023)

The ionic conductivity of Li ₄ B ₁₀ H ₁₀ B ₁₂ H ₁₂ exceeds that of its parent compounds Li ₂ B ₁₀ H ₁₀ and Li ₂ B ₁₂ H ₁₂ by several orders of magnitude. It is stable against…

Yuanye Huang, Radovan Cerny, Corsin Battaglia and Arndt Remhof

Journal of materials science 58 17, 7398-7406 (2023)

Hydroborates are an emerging class of solid electrolytes for all-solid-state batteries. Here, we investigate the impact of pressure on the crystal structure and ionic conductivity of a close-hydroborate salt consisting of Na ₂ B ₁₀ H ₁₀ and Na ₂ B…

Hugo Cayla, Pietro Massignan, Thierry Giamarchi, Alain Aspect, Christoph I. Westbrook and David Clément

Physical Review Letters 130 15, 153401 (2023)

Elisabeth Agoritsas, Giovanni Catania and Aurélien Decelle

ICML’23: Proceedings of the 40th International Conference on Machine Learning, 322-336 (2023)

In this paper, we quantify the impact of using non-convergent Markov chains to train Energy-Based models (EBMs). In particular, we show analytically that EBMs trained with non-persistent short runs to estimate the gradient can perfectly reproduce a set of empirical statistics of the data, not at…

Carmine Senatore, Tommaso Bagni, José Ferradas Troitino, B Bordini and A Ballarino

Superconductor science and technology 36 7, 075001 (2023)

Future particle colliders in search for new physics at the energy frontier require the development of accelerator magnets capable of producing fields well beyond those attainable with Nb-Ti. As the next generation of high-field accelerator magnets is presently planned to be based on Nb ₃ …

Florian Margot, Simone Lisi, Irène Cucchi, Edoardo Cappelli, Andrew Scott Hunter, Ignacio Gutierrez Lezama, KeYuan Ma, Fabian von Rohr, Christophe Berthod, Francesco Petocchi, Samuel Poncé, Nicola Marzari, Marco Gibertini, Anna Tamai, Alberto Morpurgo and Felix Baumberger

Nano letters 23, 6433 (2023)

Black phosphorus (BP) stands out among two-dimensional (2D) semiconductors because of its high mobility and thickness dependent direct band gap. However, the quasiparticle band structure of ultrathin BP has remained inaccessible to experiment thus far. Here we use a recently developed laser-based…

Bastien Michon, Christophe Berthod, Willem Rischau, Amirreza Ataei, Lu Chen, Seiki Komiya, Shimpei Ono, Louis Taillefer, Dirk Van Der Marel and Antoine Georges

Nature communications 14 1, 3033 (2023)

Materials tuned to a quantum critical point display universal scaling properties as a function of temperature T and frequency ω . A long-standing puzzle regarding cuprate superconductors has been the observed power-law dependence of optical conductivity with an exponent smaller than one, in…

Lihuan Sun, Louk Rademaker, Diego Mauro, Alessandro Scarfato, Arpad Pasztor, Ignacio Gutierrez Lezama, Zhen Wang, José Martinez Castro, Alberto Morpurgo and Christoph Renner

Nature communications 14 1, 3771 (2023)

Inducing and controlling spin-orbit coupling (SOC) in graphene is key to create topological states of matter, and for the realization of spintronic devices. Placing graphene onto a transition metal dichalcogenide is currently the most successful strategy to achieve this goal, but there is no…

Carsten Putzke, Chunyu Guo, Vincent Plisson, Martin Kroner, Thibault Chervy, Matteo Simoni, Pim Wevers, Maja D. Bachmann, John R. Cooper, Antony Carrington, Naoki Kikugawa, Jennifer Fowlie, Stefano Gariglio, Andrew P. Mackenzie, Kenneth S. Burch, Ataç Îmamoğlu and Philip J. W. Moll

Nature communications 14 1, 3147, 1-7 (2023)

The quest to improve transparent conductors balances two key goals: increasing electrical conductivity and increasing optical transparency. To improve both simultaneously is hindered by the physical limitation that good metals with high electrical conductivity have large carrier densities that push …

Andrew Scott Hunter, S. Beck, Edoardo Cappelli, Florian Margot, Michael Straub, Yann Alexanian, Gianmarco Gatti, M. D. Watson, T. K. Kim, C. Cacho, N. C. Plumb, M. Shi, M. Radović, D. A. Sokolov, A. P. Mackenzie, M. Zingl, J. Mravlje, Antoine Georges, Felix Baumberger and Anna Tamai

Physical review letters 131, 236502 (2023)

We study the temperature evolution of quasiparticles in the correlated metal Sr$_2$RuO$_4$. Our angle resolved photoemission data show that quasiparticles persist up to temperatures above 200~K, far beyond the Fermi liquid regime. Extracting the quasiparticle self-energy we demonstrate that the…

Glory Mary Givi

Thèse, 120 (2023)

This thesis is concerned with the evolution of opinions among voters during election processes. We employ dynamical systems and methodologies developed in physics and mathematics to model such election processes. We investigate the opinion formation process among an ensemble of interacting…

Vincent Pasquier, Alessandro Scarfato, José Martinez Castro, Antoine Guipet and Christoph Renner

Review of scientific instruments 94 1, 013905 (2023)

Strain is attracting much interest as a mean to tune the properties of thin exfoliated two-dimensional materials and their heterostructures. Numerous devices to apply tunable uniaxial strain are proposed in the literature, but only few for biaxial strain, often with a trade-off between maximum…

Joao Dos Santos Ferreira

Thèse (2023)

In this thesis, I study the transport properties of driven out-of-equilibrium systems. This goal is achieved by employing a combination of analytic and numerical techniques to investigate low-dimensional fermionic chains affected by unitary interactions or dissipation. The latter allows for an…

Andrew Scott Hunter

Thèse (2023)

In its normal state, Sr₂RuO₄ is a prototypical Fermi liquid below ∼ 25 K. At ∼ 1.5 K it undergoes a superconducting transition, but it has long remained challenging to determine the symmetry or order parameter of the superconducting state. Recent experiments have shown…

Vincent Pasquier

Thèse (2023)

Strain, which results from the deformation of a material, is used as a tuning parameter to study the charge density wave (CDW) phase in transition metal dichalcogenides (TMDs). We have developed two bending devices to apply uniaxial or biaxial strain to low-dimensional materials. Characterization…

Giulia Tenasini, David Soler Delgado, Zhe Wang, Fengrui Yao, Dumitru Dumcenco, Enrico Giannini, Kenji Watanabe, Takashi Taniguchi, Christian Moulsdale, Aitor Garcia-Ruiz, Vladimir I. Fal’ko, Ignacio Gutierrez Lezama and Alberto Morpurgo

Nano letters 22 16, 6760-6766 (2022)

Dorota Pulmannova, Céline Besnard, Petr Bezdička, Marios Hadjimichael, Jérémie Teyssier and Enrico Giannini

CrystEngComm 24 20, 3731-3740 (2022)

We have grown single crystals of a new polymorph of Sr ₂ TiO ₄ . It contains titanium in an unusual tetrahedral coordination and transforms to the Ruddlesden–Popper structure with an interesting orientational relationship.

E. Nocerino, Catherine Witteveen, S. Kobayashi, O. K. Forslund, N. Matsubara, A. Zubayer, F. Mazza, S. Kawaguchi, A. Hoshikawa, I. Umegaki, J. Sugiyama, K. Yoshimura, Y. Sassa, Fabian von Rohr and M. Månsson

Scientific reports 12 1, 21657 (2022)

Two-dimensional (2D) triangular lattice antiferromagnets (2D-TLA) often manifest intriguing physical and technological properties, due to the strong interplay between lattice geometry and electronic properties. The recently synthesized 2-dimensional transition metal dichalcogenide LiCrTe $$_2$$ 2 , …

Manuele Danilo Balestra, Omargeldi Atanov, Robin Lefèvre, Olivier Blacque, Yat Hei Ng, Rolf Lortz and Fabian von Rohr

Journal of materials chemistry. C 10 32, 11703-11709 (2022)

We report on the discovery of Nb ₄ SiSb ₂ . This compound is a new superconductor with a T _c of 1.6 K. The channel void positions of this phase can be partly filled with Cu, Pd, or Pt, which leads to a lowering of the transition temperature.

Sara Almudena Lopez Paz and Fabian von Rohr

Chimia 76 7-8, 628-634 (2022)

Exploratory quantum materials discovery remains crucial to progress in material science. Due to the grand challenges that we are facing in predicting these materials and their properties from scratch, chemical design principles remain a key ingredient for the discovery of new materials. Chemical…

Sara Almudena Lopez Paz, Zurab Guguchia, Vladimir Y. Pomjakushin, Catherine Witteveen, Antonio Cervellino, Hubertus Luetkens, Nicola Casati, Alberto Morpurgo and Fabian von Rohr

Nature communications 13 1, 4745 (2022)

The van-der-Waals material CrSBr stands out as a promising two-dimensional magnet. Here, we report on its detailed magnetic and structural characteristics. We evidence that it undergoes a transition to an A-type antiferromagnetic state below T _N ≈ 140 K with a pronounced…

Casey K. W. Leung, Xiaofu Zhang, Fabian von Rohr, Rolf Lortz and Berthold Jäck

Scientific reports 12 1, 12773 (2022)

High-entropy alloys (HEA) form through the random arrangement of five or more chemical elements on a crystalline lattice. Despite the significant amount of resulting compositional disorder, a subset of HEAs enters a superconducting state below critical temperatures, $$T_{\text{c}}

Jens Oppliger, Berk Zengin, Danyang Liu, Kevin Hauser, Catherine Witteveen, Fabian von Rohr and Fabian Donat Natterer

MethodsX 9, 101784 (2022)

Xiaofu Zhang, Rui Shu, Huanlong Liu, Anna Elsukova, Per O. Å. Persson, Andreas Schilling, Fabian von Rohr and Per Eklund

Communications physics 5 1 (2022)

Superconducting high entropy alloys (HEAs) may combine extraordinary mechanical properties with robust superconductivity. They are suitable model systems for the investigation of the interplay of disorder and superconductivity. Here, we report on the superconductivity in (TaNb) _{1- x} …

Pablo Cayado Llosa, Lukas Grünewald, Manuela Erbe, Jens Hänisch, Dagmar Gerthsen and Bernhard Holzapfel

RSC advances 12 44, 28831-28842 (2022)

High-entropy oxide (HEO) superconductors have been developed since very recently. Different superconductors can be produced in the form of a high-entropy compound, including REBa₂Cu₃O_7−δ (REBCO). However, until now, mainly bulk samples (mostly in polycrystalline…

Daniil Domaretskiy

Thèse, 148 (2022)

2-dimensional (2D) materials have stunned the scientific community and have triggered immense interest due to their unique optoelectronic properties. These properties strongly depend on the thickness of 2D layers and can be controlled by an externally applied voltage providing experimental…

Hugo Henck, Diego Mauro, Daniil Domaretskiy, Marc Philippi, Shahriar Memaran, Wenkai Zheng, Zhengguang Lu, Dmitry Shcherbakov, Chun Ning Lau, Dmitry Smirnov, Luis Balicas, Kenji Watanabe, Takashi Taniguchi, Vladimir I. Fal’ko, Ignacio Gutierrez Lezama, Nicolas Ubrig and Alberto Morpurgo

Nature communications 13 1, 3917 (2022)

Light-emitting electronic devices are ubiquitous in key areas of current technology, such as data communications, solid-state lighting, displays, and optical interconnects. Controlling the spectrum of the emitted light electrically, by simply acting on the device bias conditions, is an important…

Daniil Domaretskiy, Marc Philippi, Marco Gibertini, Nicolas Ubrig, Ignacio Gutierrez Lezama and Alberto Morpurgo

Nature nanotechnology (2022)

J. E. Hirsch and Dirk Van Der Marel

Matter and radiation at extremes 7 4, 048401 (2022)

A material termed “carbonaceous sulfur hydride” has recently been reported to be a high-pressure room temperature superconductor [Snider et al., Nature 586, 373 (2020)]. We have previously pointed out that certain anomalies observed in the published data for the ac magnetic susceptibility of…

Dirk Van Der Marel and J. E. Hirsch

International journal of modern physics b, 2375001 (2022)

Recently, the discovery of room-temperature superconductivity was announced for a carbonaceous sulfur hydride (CSH) under high pressure [E. Snider et al., Nature 586, 373 (2020)]. The evidence for superconductivity was based on resistance and magnetic susceptibility measurements. In the figures…

David Soler Delgado, Fengrui Yao, Dumitru Dumcenco, Enrico Giannini, Jiaruo Li, Connor A. Occhialini, Riccardo Comin, Nicolas Ubrig and Alberto Morpurgo

Nano letters, 2c01361 (2022)

Francesco Barantani, Michaël Tran, I. Madan, Itzik Kapon, Nimrod Bachar, T. c. Asmara, E. Paris, Y. Tseng, W. Zhang, Y. Hu, Enrico Giannini, G. Gu, T. p. Devereaux, Christophe Berthod, F. Carbone, T. Schmitt and Dirk Van Der Marel

Physical review. X 12 2, 021068 (2022)

Dorota Pulmannova

Thèse (2022)

Strontium titanate is a cubic perovskite, which is insulating in its pristine state but becomes metallic upon electron doping. It is one of the most dilute superconductors and the pairing mechanism is unknown. In addition, SrTiO₃ is a quantum paraelectric, in which zero-point…

M. Caputo, J. Jandke, Edoardo Cappelli, S.K. Chaluvadi, E. Bonini Guedes, M. Naamneh, G. Vinai, J. Fujii, P. Torelli, I. Vobornik, A. Goldoni, P. Orgiani, Felix Baumberger, M. Radovic and G. Panaccione

Applied surface science 574, 151608 (2022)

Marco Bonura, Pablo Cayado Llosa, Konstantina Konstantopoulou, Matteo Alessandrini and Carmine Senatore

ACS applied electronic materials (2022)

The degradation of the superconducting properties of REBa2Cu3O7−x coated conductors when heated above 150 °C is a topic of concern for any REBa2Cu3O7−x-based applications. This study makes it clear the role of thermally activated oxygen out-diffusion processes in the modification of the…

Yaqi Li, Edoardo Zatterin, Michele Conroy, Anastasiia Pylypets, Fedir Borodavka, Alexander Björling, Dirk J. Groenendijk, Edouard Lesne, Adam J. Clancy, Marios Hadjimichael, Demie Kepaptsoglou, Quentin M. Ramasse, Andrea Caviglia, Jiri Hlinka, Ursel Bangert, Steven J. Leake and Pavlo Zubko

Advanced materials, 2106826 (2022)

The combination of strain and electrostatic engineering in epitaxial heterostructures of ferroelectric oxides offers many possibilities for inducing new phases, complex polar topologies, and enhanced electrical properties. However, the dominant effect of substrate clamping can also limit the…

Javier Del Valle Granda, Pavel Salev, Stefano Gariglio, Yoav Kalcheim, Ivan K. Schuller and Jean-Marc Triscone

Nano letters (2022)

Marc Gabay, Stefano Gariglio and Jean-Marc Triscone

Nature materials 21 2, 139-140 (2022)

Iaroslav Gaponenko, Guillaume Thibaut Rohat, Stéphane Goyette, Patrycja Paruch and Jérôme Kasparian

Scientific reports 12 1, 2997 (2022)

Describing the spatial velocity of climate change is essential to assessing the challenge of natural and human systems to follow its pace by adapting or migrating sufficiently fast. We propose a fully-determined approach, “MATCH”, to calculate a realistic and continuous velocity field of any…

Fan Wu, Ignacio Gutierrez Lezama, Sara A. Lopéz‐Paz, Marco Gibertini, Kenji Watanabe, Takashi Taniguchi, Fabian Oliver Von Rohr, Nicolas Ubrig and Alberto Morpurgo

Advanced materials, 2109759 (2022)

We investigate electronic transport through exfoliated multilayers of CrSBr, a 2D semiconductor that is attracting attention because of its magnetic properties. We find an extremely pronounced anisotropy that manifests itself in qualitative and quantitative differences of all quantities measured…

Tommaso Bagni, Hugo Maximilien Haldi, Diego Mauro and Carmine Senatore

IOP SciNotes 3 1, 015201 (2022)

We developed a graphical user interface (GUI) to analyse tomographic images of superconducting Nb ₃ Sn wires designed for the next generation accelerator magnets. The Tomography Analysis Tool (TAT) relies on the k -means algorithm, an unsupervised machine learning technique which is…

Edoardo Cappelli, A. Hampel, A. Chikina, E. Bonini Guedes, Gianmarco Gatti, Andrew Scott Hunter, Julia Issing, N. Biskup, M. Varela, Cyrus E. Dreyer, Anna Tamai, Antoine Georges, F. Y. Bruno, M. Radovic and Felix Baumberger

Physical review materials 6, 075002 (2022)

We use angle-resolved photoemission to map the Fermi surface and quasiparticle dispersion of bulk-like thin films of SrMoO$_3$ grown by pulsed laser deposition. The electronic self-energy deduced from our data reveals weak to moderate correlations in SrMoO$_3$, consistent with our observation of…

Siobhan Mckeown Walker, Margherita Boselli, Emanuel A. Martínez, Stefano Gariglio, Flavio Y. Bruno and Felix Baumberger

Advanced electronic materials, 2101376 (2022)

We have measured the electronic structure of the two-dimensional electron system (2DES) found at the Al/SrTiO3 (Al/STO) and LaAlO3/SrTiO3 (LAO/STO) interfaces by means of laser angle resolved photoemission spectroscopy, taking advantage of the large photoelectron escape depth at low photon energy…

Robin Lefèvre and Fabian von Rohr

Chemistry of materials 34 5, 2352-2360 (2022)

We report on the hitherto unknown compound CeZn_2−δGe₂ (δ ≈ 0.41). We find that this compound crystallizes in a defect version of the well-known CaBe₂Ge₂ structure type. The phase forms in a Zn/In flux and with Zn deficiency on one of its…

Tommaso Bagni, Diego Mauro, Marta Majkut, Alexander Rack and Carmine Senatore

Superconductor science and technology 35 10, 104003 (2022)

This paper reports a novel non-destructive and non-invasive method to investigate crack formation and propagation in high-performance Nb$_{3}$Sn wires by combining x-ray tomography and deep learning networks. The next generation of high field magnet applications relies on the development of new…

Marios Hadjimichael, Adrien Waelchli, Bernat Mundet Bolos, Siobhan Mckeown Walker, Gabriele De Luca, Javier Herrero-Martín, Marta Gibert, Stefano Gariglio and Jean-Marc Triscone

APL materials 10 10, 101112 (2022)

The layered structure of superconducting cuprates is considered to be a key ingredient to achieve high superconducting transition temperatures. In this work, we investigate the possibility of doping the SrCuO ₂ infinite-layer compound by inserting additional oxygen into its structure….

Radovan Cerny, Fabrizio Murgia and Matteo Brighi

Journal of alloys and compounds 895, 162659 (2022)

D. Fonnesu, A. Baris, S. Calatroni, L. Lain Amador, S. Pfeiffer, G. Rosaz, Marco Bonura and Carmine Senatore

Superconductor science and technology 35 12, 125003 (2022)

In the framework of the Future Circular Collider Study, the development of thin-film coated superconducting radio-frequency copper cavities capable of providing higher accelerating fields (10–20 MV m$^{−1}$ against 5 MV m$^{−1}$ for the Large Hadron Collider) represents a major…

Paola Ruggiero, Pasquale Calabrese, Thierry Giamarchi and Laura Foini

SciPost physics 13, 111 (2022)

The study of the non-equilibrium dynamics of many-body systems after a quantum quench received a considerable boost and a deep theoretical understanding from the path integral formulation in imaginary time. However, the celebrated problem of a quench in the Luttinger parameter of a one dimensional…

Shintaro Takayoshi and Thierry Giamarchi

The European physical journal. D, Atomic, molecular and optical physics 76, 213 (2022)

We study the transport properties of a one-dimensional quantum system with disorder. We numerically compute the frequency dependence of the conductivity of a fermionic chain with nearest-neighbor interaction and a random chemical potential by using the Chebyshev matrix product state (CheMPS)…

Zizhuo Tony Jin and David G. Martin

Physical Review Letters 129, 260603 (2022)

Izabella Lovas, Roberta Citro, Eugene Demler, Thierry Giamarchi, Michael Knap and Edmond Orignac

Physical review. B 106, 075426 (2022)

We study a quantum many-body variant of the parametric oscillator by investigating the driven sine-Gordon model with a modulated tunnel coupling via a semiclassical truncated Wigner approximation (TWA). We first analyze the parametric resonant regime for driving protocols that retain our model…

Nirvana Belen Caballero, Thierry Giamarchi, Vivien Lecomte and Elisabeth Agoritsas

Physical review. E 105, 044138 (2022)

Jeannette De Marco, Luisa Tolle, Catalin-Mihai Halati, Ameneh Sheikhan, Andreas M. Läuchli and Corinna Kollath

Physical review research 4, 033119 (2022)

A.-M. Visuri, Thierry Giamarchi and C. Kollath

Physical review letters 129, 056802 (2022)

Zizhuo Tony Jin, Joao Dos Santos Ferreira, Michele Filippone and Thierry Giamarchi

Physical review research 4, 013109 (2022)

B. Chiaro, C. Neill, A. Bohrdt, Michele Filippone, F. Arute, K. Arya, R. Babbush, D. Bacon, J. Bardin, R. Barends, S. Boixo, D. Buell, B. Burkett, Y. Chen, Z. Chen, R. Collins, A. Dunsworth, E. Farhi, A. Fowler, B. Foxen, C. Gidney, M. Giustina, M. Harrigan, T. Huang, S. Isakov, E. Jeffrey, Z. Jiang, D. Kafri, K. Kechedzhi, J. Kelly, P. Klimov, A. Korotkov, F. Kostritsa, D. Landhuis, E. Lucero, J. McClean, X. Mi, A. Megrant, M. Mohseni, J. Mutus, M. McEwen, O. Naaman, M. Neeley, M. Niu, A. Petukhov, C. Quintana, N. Rubin, D. Sank, K. Satzinger, T. White, Z. Yao, P. Yeh, A. Zalcman, V. Smelyanskiy, H. Neven, S. Gopalakrishnan, Dmitry Abanin, M. Knap, J. Martinis and P. Roushan

Physical review research 4, 013148 (2022)

Zekai Chen, Hepeng Yao, Elisha Haber and Nicholas P. Bigelow

Physical review research 4, 013124 (2022)

Guillaume Rapin

Thèse, 113 (2022)

La physique des systèmes élastiques désordonnés permet d’étudier des systèmes très variés, tel que les côtes des îles anglo-saxonnes érodées par le temps, des fissures se propageant dans le granite, les parois de domaine dans les matériaux ferroïcs, et les fronts cellulaires en…

Itzik Kapon, Willem Rischau, Bastien Michon, Kai Wang, Bing Xu, Qiu Yang, Satoru Nakatsuji and Dirk Van Der Marel

Physical Review Research 4 2, 023056 (2022)

The frustrated magnet Nd 2 Ir 2 O7 , where strong correlations together with spin-orbit coupling play a crucial role, is predicted to be a Weyl semimetal and to host topological pairs of bulk Dirac-like valleys. Here we use an external magnetic field to manipulate the localized rare-earth 4f…

Willem Rischau, Dorota Pulmannova, Gernot Scheerer, Adrien Stucky, Enrico Giannini and Dirk Van Der Marel

Physical Review Research 4 1, 013019 (2022)

Doped strontium titanate SrTiO3 (STO) is one of the most dilute superconductors known today. The fact that superconductivity occurs at very low carrier concentrations is one of the two reasons that the pairing mechanism is not yet understood, the other being the role played by the proximity to a…

Nimrod Bachar, Kacper Koteras, Jakub Gawraczynski, Waldemar Trzciński, Józef Paszula, Riccardo Piombo, Paolo Barone, Zoran Mazej, Giacomo Ghiringhelli, Abhishek Nag, Ke-Jin Zhou, José Lorenzana, Dirk Van Der Marel and Wojciech Grochala

Physical Review Research 4 2, 023108 (2022)

Charge-transfer insulators are the parent phase of a large group of today’s unconventional high-temperature superconductors. Here we study experimentally and theoretically the interband excitations of the charge-transfer insulator silver fluoride AgF2, which has been proposed as an excellent analog …

Matteo Brighi, Fabrizio Murgia, Zbigniew Łodziana and Radovan Cerny

Inorganic chemistry 61 15, 5813-5823 (2022)

Christian L. Jakobsen, Matteo Brighi, Bettina P. Andersen, Gaëtan Ducrest, Radovan Cerny and Dorthe B. Ravnsbæk

Journal of power sources 535, 231317 (2022)

L. Rossi, A. Ballarino, D. Barna, E. Benedetto, C. Calzolaio, G. Ceruti, E. De Matteis, A. Echeandia, T. Ekelof, S. Farinon, E. Felcini, M. Gehring, G. Kirby, T. Lecrevisse, J. Lucas, S. Mariotto, J. Munilla, R. Musenich, A. Pampaloni, K. Pepitone, D. Perini, D. Popovic, M. Prioli, M. Pullia, L. Quettier, S. Sanfilippo, Carmine Senatore, E. Shabagin, M. Sorbi, M. Statera, D. Tommasini, F. Toral, R. Valente, D. Veres and M. Vieweg

IEEE transactions on applied superconductivity 32 4, 1-7 (2022)

Next generation ion therapy magnets both for gantry and for accelerator (synchrotron) are under investigation in a recently launched European collaboration that, in the frame of the European H2020 HITRIplus and I.FAST programmes, has obtained some funding for work packages on superconducting…

Martin Lee, Johannes R. Renshof, Kasper J. van Zeggeren, Maurits J. A. Houmes, Edouard Lesne, Makars Šiškins, Thierry C. van Thiel, Ruben H. Guis, Mark R. van Blankenstein, Gerard J. Verbiest, Andrea Caviglia, Herre S. J. van der Zant and Peter G. Steeneken

Advanced Materials 34 44, 2204630 (2022)

Khalil Zakeri and Christophe Berthod

Physical Review B 106 23, 235117 (2022)

The scattering theory of low-energy (slow) electrons has been developed by Evans and Mills [Phys. Rev. B 5, 4126 (1972)]. The formalism is merely based on the electrostatic Coulomb interaction of the scattering electrons with the charge-density fluctuations above the surface and can describe most…

P. Ilzhöfer, M. Sohmen, G. Durastante, C. Politi, A. Trautmann, G. Natale, Giacomo Arturo Maria Morpurgo, Thierry Giamarchi, L. Chomaz, M. J. Mark and F. Ferlaino

Nature physics 17, 356-361 (2021)

A supersolid is a counterintuitive phase of matter that combines the global phase coherence of a superfluid with a crystal-like self-modulation in space. Recently, such states have been experimentally realized using dipolar quantum gases. Here we inves- tigate the response of a dipolar supersolid…

Lucio Rossi and Carmine Senatore

Instruments 5 8 (2021)

In view of the preparation for a post-LHC collider, in 2010 the high-energy physics (HEP) community started to discuss various options, including the use of HTS for very high-field dipoles. Therefore, a small program was begun in Europe that aimed at exploring the possibility of using HTS for…

Florin Buta, Marco Bonura, Davide Matera, Gianmarco Bovone, A Ballarino, S C Hopkins, B Bordini, X Chaud and Carmine Senatore

Journal of Physics: Materials 4 025003 (2021)

The inhibition of Nb3Sn grain growth in the presence of ZrO2 nanoparticles appears to be one of the most promising method for pushing the critical current densities of Nb3Sn superconducting wires to levels that meet the requirements set for the Future Circular Collider. We have investigated the…

Hugo Meley, Michaël Tran, Jérémie Teyssier, J. A. Krieger, T. Prokscha, A. Suter, Z. Salman, M. Viret, Dirk Van Der Marel and Stefano Gariglio

Physical Review. B, Condensed Matter 103 125112 (2021)

3d^2 vanadate perovskites exhibit an unusual phase diagram where the low temperature orbital and spin orders are strongly dependent upon the rare-earth cation size. Here, we demonstrate the delicate role of strain in epitaxial LaVO3 films by performing low-energy muon spin spectroscopy and…

Jennifer Fowlie, Bernat Mundet Bolos, Constance Toulouse, Alexander Schober, Mael Guennou, Claribel Dominguez Ordonez, Marta Gibert, Duncan T. L. Alexander, Jens Kreisel and Jean-Marc Triscone

APL Materials 9 081119 (2021)

A strong coupling of the lattice to functional properties is observed in many transition metal oxide systems, such as the ABO3 perovskites. In the quest for tailor-made materials, it is essential to be able to control the structural properties of the compound(s) of interest. Here, thin film solid…

Arndt Remhof and Radovan Cerny

Crystallography in Materials Science, 265-290 (2021)

Hydroborates are a promising class of superionic conductors for lithium and sodium all-solid-state batteries. They combine high ionic conductivity with (electro-) chemical and thermal stability and favorable mechanical properties. In this chapter, we elucidate their conductivity mechanism based on…

José Ferradas Troitino, H Bajas, L Bianchi, B Castaldo, P Ferracin, M Guinchard, S Izquierdo, J V Lorenzo, F Mangiarotti, J C Perez, E Takala, G Vallone and Carmine Senatore

Superconductor Science and Technology 34 084003 (2021)

The fast thermal and electromagnetic transients that occur in a superconducting magnet in case of a quench have the potential of generating large mechanical stresses both in the superconducting coils and in the magnet structure. While the investigation of such quench loads should generally be…

Yuhu Zhai, Bruce Berlinger, Christian Barth and Carmine Senatore

Superconductor Science and Technology 34 105003 (2021)

Fusion energy systems studies (FESS) for next-step devices based on the most promising magnetic configurations indicate that high magnetic fields and high current density for magnet coil systems may reduce device size and lower the cost. High current density and radiation resistant fusion magnets…

Ivan Ardizzone

Thèse (2021)

We report the evolution of the lattice, electronic and magnetic structure of nickelates along the series using various optical spectroscopy techniques. The crystal structures from the highest to the lowest symmetry present in the phase diagram, the electronic structure and the different probable…

Francisco Manuel Betancourt Cordova, Andras Kiss, Ivo Krejci and Tissiana Bortolotto Ibarra

Materials 14 16, 4535 (2021)

This study aimed to assess the effect of biomodification before adhesive procedures on the tooth-restoration interface of class V restorations located in caries-simulated vs. sound dentin, and the quality of dentin surface by time-of-flight secondary ion mass spectrometry (ToF-SIMS). Class V…

Daniil Domaretskiy, Nicolas Ubrig, Ignacio Gutierrez Lezama, Michaël Tran and Alberto Morpurgo

2D Materials 8 045016 (2021)

Mathias Jørgensen, Wei Zhou, Hui Wu, Terrence J. Udovic, Mark Paskevicius, Radovan Cerny and Torben R. Jensen

Inorganic Chemistry 60 15, 10943-10957 (2021)

Metal closo-borates and their derivatives have shown promise in several fields of application from cancer therapy to solidstate electrolytes partly owing to their stability in aqueous solutions and high thermal stability. We report the synthesis and structural analysis of α- and β-CaB10H10, which …

Iaroslav Gaponenko, Loïc Musy, Neus Domingo, Nicolas Stucki, Albert Verdaguer, Nazanin Bassiri-Gharb and Patrycja Paruch

npj computational materials 7 1, 163 (2021)

Electrochemical phenomena in ferroelectrics are of particular interest for catalysis and sensing applications, with recent studies highlighting the combined role of the ferroelectric polarisation, applied surface voltage and overall switching history. Here, we present a systematic Kelvin probe…

Arpad Pasztor, Alessandro Scarfato, Marcello Spera, Felix Flicker, Céline Barreteau, Enrico Giannini, Jasper van Wezel and Christoph Renner

Nature communications 12 1, 6037 (2021)

In the presence of multiple bands, well-known electronic instabilities may acquire new complexity. While multiband superconductivity is the subject of extensive studies, the possibility of multiband charge density waves (CDWs) has been largely ignored so far. Here, combining energy dependent…

R. Gaina, S. Sarkar, M. Soulier, J. Khmaladze, E. Perret, A. Tcakaev, V. Hinkov, Marco Bonura, E. Weschke and C. Bernhard

Physical review 104 17, 174513 (2021)

Quentin Faure, Shintaro Takayoshi, Béatrice Grenier, Sylvain Petit, Stéphane Raymond, Martin Boehm, Pascal Lejay, Thierry Giamarchi and Virginie Simonet

Physical review research 3, 043227 (2021)

We study the dynamics of the quasi-one-dimensional Ising-Heisenberg antiferromagnet BaCo2V2O8 under a transverse magnetic field. Combining inelastic neutron scattering experiments and theoretical analyses by field theories and numerical simulations, we mainly elucidate the structure of the spin…

Nirvana Belen Caballero

Journal of statistical mechanics 2021, 103207 (2021)

Recent experiments show striking unexpected features when alter- nating square magnetic field pulses are applied to ferromagnetic samples: domains show area reduction and domains walls change their roughness. We explain these phenomena with a simple scalar-field model, using a numerical protocol…

Margherita Boselli, Gernot Scheerer, Michele Filippone, Weiwei Luo, Adrien Waelchli, Alexey Kuzmenko, Stefano Gariglio, Thierry Giamarchi and Jean-Marc Triscone

Physical review. B. 103, 075431 (2021)

Nanoscale channels realized at the conducting interface between LaAlO3 and SrTiO3 provide a perfect playground to explore the effect of dimensionality on the electronic properties of complex oxides. Here we compare the electric transport properties of devices realized using the atomic force…

Maximilian Buser, Sebastian Greschner, Ulrich Schollwöck and Thierry Giamarchi

Physical review letters 126, 030501 (2021)

In the context of experimental advances in the realization of artificial magnetic fields in quantum gases, we discuss feasible schemes to extend measurements of the Hall polarization to a study of the Hall voltage, allowing for direct comparison with solid state systems. Specifically, for the…

Marco Bonura, He Huang, Cong Liu, Yanwei Ma and Carmine Senatore

IEEE transactions on applied superconductivity 31 5, 7300105 (2021)

This work reports the longitudinal thermal conductivity, κ, of Ag- and Cu/Ag-sheathed Ba 1-x K x Fe 2 As 2 conductors. Our investigation has been carried out between 4 K and 80 K with magnetic fields up to 19 T. In the case of Ag-sheathed tapes, the thermal conductivity reaches maximum values of…

Vincenzo Alba, Bruno Bertini, Maurizio Fagotti, Lorenzo Piroli and Paola Ruggiero

Journal of statistical mechanics 2021 11, 114004 (2021)

We give a pedagogical introduction to the generalized hydrodynamic approach to inhomogeneous quenches in integrable many-body quantum systems. We review recent applications of the theory, focusing in particular on two classes of problems: bipartitioning protocols and trap quenches, which represent…

Denis Bernard and Zizhuo Tony Jin

Communications in Mathematical Physics 384 2, 1141-1185 (2021)

The quantum symmetric simple exclusion process (Q-SSEP) is a model for quantum stochastic dynamics of fermions hopping along the edges of a graph with Brownian noisy amplitudes and driven out-of-equilibrium by injection-extraction processes at a few vertices. We present a solution for the invariant …

Guillaume Rapin, Nirvana Belen Caballero, Iaroslav Gaponenko, Benedikt Ziegler, Audrey Rawleigh, Ermanno Moriggi, Thierry Giamarchi, Steven A. Brown and Patrycja Paruch

Scientific reports 11 1, 8869 (2021)

Juxtacellular interactions play an essential but still not fully understood role in both normal tissue development and tumour invasion. Using proliferating cell fronts as a model system, we explore the effects of cell–cell interactions on the geometry and dynamics of these one-dimensional…

Edoardo Cappelli

Thèse (2021)

In this thesis, I present my research work on epitaxial thin films of LaNiO3 and SrMoO3, investigated by angle-resolved photoemission spectroscopy (ARPES), which yields a direct measurement of the interacting electronic structure. Thin films of the correlated transition-metal oxide LaNiO3 undergo a …

Irène Cucchi, Simone Lisi, Florian Margot, Hugo Henck, Anna Tamai and Felix Baumberger

Comptes rendus. Physique. 22 S4 (2021)

Xiang Li, S. E. Cooper, A. Krishnadas, A. de la Torre, R. S. Perry, Felix Baumberger, D. M. Silevitch, D. Hsieh, T. F. Rosenbaum and Yejun Feng

Physical review. B. 104 20, L201111 (2021)

Javier Del Valle Granda, Rodolfo Rocco, Claribel Dominguez Ordonez, Jennifer Fowlie, Stefano Gariglio, Marcelo J. Rozenberg and Jean-Marc Triscone

Physical review. B, Condensed matter 104 16, 165141 (2021)

Ezequiel E. Ferrero, Laura Foini, Thierry Giamarchi, Alejandro B. Kolton and Alberto Rosso

Annual review of condensed matter physics 12, 111-134 (2021)

The thermally activated creep motion of an elastic interface weakly driven on a disordered landscape is one of the best examples of glassy universal dynamics. Its understanding has evolved over the past 30 years thanks to a fruitful interplay among elegant scaling arguments, sophisticated…

Adrien Waelchli

Thèse (2021)

Le mécanisme régissant la supraconductivité à haute température critique, observée dans des composés à base de cuivre et d’oxygène (cuprates), n’est à ce jour pas encore entièrement élucidé. Dans cette thèse sont étudiés des systèmes dits « infinite-layer » avec la formule…

Ulrich Krause, Théo Pellegrin-Frachon, Piet W. Brouwer, Dmitry Abanin and Michele Filippone

Physical review letters 126, 030603 (2021)

We consider a disordered Hubbard model and show that, at sufficiently weak disorder, a single spin- down mobile impurity can thermalize an extensive initially localized system of spin-up particles. Thermalization is enabled by resonant processes that involve correlated hops of the impurity and…

Thierry Giamarchi

Journal Club for Condensed Matter Physics 07 (2021)

Zizhuo Tony Jin, Tristan Gautié, Alexandre Krajenbrink, Paola Ruggiero and Takato Yoshimura

Journal of physics. A, Mathematical and theoretical 54, 404001 (2021)

We study the quench dynamics in free fermionic systems in the prototypical bipartitioning protocol obtained by joining two semi-infinite subsystems pre- pared in different states, aiming at understanding the interplay between quantum coherences in space in the initial state and transport…

Pamela C Guruciaga, Nirvana Belen Caballero, Vincent Jeudy, Javier Curiale and Sebastian Bustingorry

Journal of statistical mechanics 2021, 033211 (2021)

Along with experiments, numerical simulations are key to gaining insight into the underlying mechanisms governing domain wall motion in thin ferromagnetic systems. However, a direct comparison between numerical simula- tion of model systems and experimental results still represents a great…

Paola Ruggiero, Pasquale Calabrese, Laura Foini and Thierry Giamarchi

SciPost physics 11, 055 (2021)

We study the quantum quench in two coupled Tomonaga-Luttinger Liquids (TLLs), from the off-critical to the critical regime, relying on the conformal field theory approach and the known solutions for single TLLs. We consider a squeezed form of the initial state, whose low energy limit is fixed in a…

Paola Ruggiero, Laura Foini and Thierry Giamarchi

Physical review research 3, 013048 (2021)

We study the effect of a quantum quench between two tunnel coupled Tomonaga-Luttinger liquids (TLLs) with different speed of sound and interaction parameter. The quench dynamics is induced by switching off the tunneling and letting the two systems evolve independently. We fully diagonalize the…

S. A. Zvyagin, A. N. Ponomaryov, M. Ozerov, E. Schulze, Y. Skourski, R. Beyer, T. Reimann, L. I. Zviagina, E. L. Green, J. Wosnitza, I. Sheikin, Pierre Bouillot, Thierry Giamarchi, J. L. Wikara, M. M. Turnbull and C. P. Landee

Physical review. B. 103, 205131 (2021)

We report on the synthesis, crystal structure, magnetic, thermodynamic, and electron-spin-resonance prop- erties of the coordination complex [Cu2(pz)3(4-HOpy)4](ClO4)4 (pz=pyrazine; 4-HOpy=4-hydroxypyridine)….

Guillaume Rapin, Sophia Ehrensperger, Cédric Blaser, Nirvana Belen Caballero and Patrycja Paruch

Applied Physics Letters 119, 242903 (2021)

Understanding and controlling the motion, stability, and equilibrium configuration of ferroelectric domain walls is key for their integration into potential nanoelectronic applications, such as ferroelectric racetrack memories. Using piezoresponse force microscopy, we analyze the growth and…

Paola Ruggiero, Pasquale Calabrese, Benjamin Doyon and Jérôme Dubail

Journal of physics. A, Mathematical and theoretical 55, 024003 (2021)

We apply the theory of quantum generalized hydrodynamics (QGHD) introduced in (2020 Phys. Rev. Lett. 124 140603) to derive asymptotically exact results for the density fluctuations and the entanglement entropy of a one-dimensional trapped Bose gas in the Tonks–Girardeau (TG) or hard-core limit,…

T. M. Slipchenko, Jean-Marie Poumirol, Alexey Kuzmenko, A. Yu. Nikitin and L. Martín-Moreno

Communications physics 4 1, 110 (2021)

Studying the collective excitations in charge neutral graphene (CNG) has recently attracted a great interest because of unusual mechanisms of the charge carrier dynamics. The latter can play a crucial role for formation of recently observed in twisted bilayer CNG graphene plasmon polaritons (GPPs)…

Ignacio Gutierrez Lezama, Nicolas Ubrig, Evgeniy Ponomarev and Alberto Morpurgo

Nature Reviews Physics (2021)

Reliable and precise measurements of the relative energy of band edges in 2D semiconductors are needed to determine band gaps and band offsets, as well as to establish the band diagram of devices and heterostructures. However, commonly employed techniques such as optical studies and scanning…

Charles Ahn, Andrea Cavalleri, Antoine Georges, Sohrab Ismail-Beigi, Andrew J. Millis and Jean-Marc Triscone

Nature Materials (2021)

This Perspective addresses the design, creation, characterization and control of synthetic quantum materials with strong electronic correlations. We show how emerging synergies between theoretical/computational approaches and materials design/experimental probes are driving recent advances in the…

Davide Filippo Valentinis, J. Zaanen and Dirk Van Der Marel

Scientific Reports 11 1, 7105 (2021)

A highlight of Fermi-liquid phenomenology, as explored in neutral 3He, is the observation that in the collisionless regime shear stress propagates as if one is dealing with the transverse phonon of a solid. The existence of this “transverse zero sound” requires that the quasiparticle mass…

Loïc Musy, Ralph Adam Yap Bulanadi, Iaroslav Gaponenko and Patrycja Paruch

Ultramicroscopy 228 113345 (2021)

Research in materials science increasingly depends on the correlation of information from multiple characterisation techniques, acquired in ever larger datasets. Efficient methods of processing and storing these complexdatasets are therefore crucial. Reliably keeping track of data processing is…

Michaël Tran, Ana Akrap, Julien Levallois, Jérémie Teyssier, Pascal Schouwink, Céline Besnard, P. Lerch, J. W. Allen, M. Greenblatt and Dirk Van Der Marel

Physical Review. B, Condensed Matter 103 23 (2021)

At ambient pressure, lithium molybdenum purple bronze (Li0.9Mo6O17) is a quasi-one dimensionalsolid in which the anisotropic crystal structure and the linear dispersion of the underlying bandsproduced by electronic correlations possibly bring about a rare experimental realization of…

Dirk Van Der Marel

Journal Club for Condensed Matter Physics (2021)

A discussion is presented of three recent papers describing a breakthrough in superconductivity in electron doped KTaO3 and SrTiO3. In their pristine (undoped) form these materials are band insulators with a 3 eV gap. At room temperature they have the cubic perovskite structure and both materials…

Ivan Ardizzone, Jérémie Teyssier, Iris Crassee, Alexey Kuzmenko, D. G. Mazzone, D. J. Gawryluk, M. Medarde and Dirk Van Der Marel

Physical Review Research 3 033007 (2021)

The rare earth nickelates RNiO3 are metallic at high temperatures and insulating and magnetically ordered at low temperatures. The low temperature phase has been predicted to be type II multiferroic, i.e., ferroelectricand magnetic order are coupled and occur simultaneously. Confirmation of those…

Bastien Michon, Alexey Kuzmenko, Michaël Tran, Benjamin Robert Mc Elfresh, S. Komiya, S. Ono, S. Uchida and Dirk Van Der Marel

Physical review research 3 4, 043125 (2021)

One of the most widely discussed features of the cuprate high-Tc superconductors is the presence of a pseudogap in the normal state. Recent transport and specific heat measurements have revealed an abrupt transition at the pseudogap critical point, denoted p∗, characterized by a drop in carrier…

James A. Kaduk, Simon J. L. Billinge, Robert E. Dinnebier, Nathan Henderson, Ian Madsen, Radovan Cerny, Matteo Leoni, Luca Lutterotti, Seema Thakral and Daniel Chateigner

Nature reviews methods primers 1 1, 77 (2021)

Weiwei Luo, Alexey Kuzmenko, Jialin Qi, Ni Zhang, Wei Wu, Mengxin Ren, Xinzheng Zhang, Wei Cai and Jingjun Xu

Nano letters 21 12, 5151-5157 (2021)

Dual-gate tuning on two-dimensional (2D) heterostructures can provide independent control of the carrier concentration and interlayer electrostatic potential, yielding novel electronic and optical properties. In this paper, by utilizing monolayer graphene as both the top gate and a plasmon…

Stéphan Daniel Allenspach

Thèse, 170 (2021)

Phase transitions and their accompanying concepts of criticality and universality are a foundation stone of statistical physics. Gapped spin-dimer systems are an ideal testbed to study criticality because a quantum phase transition can be induced by a magnetic field resulting in a phase equivalent…

Jean-Marie Poumirol, Adrien Bercher, Tetiana Slipchenko, Ivan Maggio-Aprile, Christoph Renner and Alexey Kuzmenko

Physical review applied 16 4, 044012 (2021)

We present a very-compact bicomponent-permanent-magnet design capable of generating 1.25 T in a small volume, significantly above the 0.6 T available from a single uniformly magnetized permanent magnet. In addition to the enhanced maximum field, our design drastically limits the stray field present …

Fabrizio Murgia, Matteo Brighi, Laura Piveteau, Claudia E. Avalos, Valerio Gulino, Marc C. Nierstenhöfer, Peter Ngene, Petra de Jongh and Radovan Cerny

ACS applied materials & interfaces 13 51, 61346-61356 (2021)

The body-centered cubic (bcc) polymorph of NaCB11H12 has been stabilized at room temperature by highenergy mechanical milling. Temperature-dependent electrochemical impedance spectroscopy shows an optimum at 45-min milling time, leading to an rt conductivity of 4 mS cm−1. Mechanical milling…

Claribel Dominguez Ordonez

Thèse, 122 (2021)

We discussed a particularly interesting interfacial effect-a coupling due to a phase boundary cost-that can be used to achieve fine control over the electronic properties of artificially-layered materials. The artificial model system, presented in this thesis, uses SmNiO3 and NdNiO3-two compounds…

A. P. Petrović, M. Raju, X. Y. Tee, A. Louat, Ivan Maggio-Aprile, R. M. Menezes, M. J. Wyszyński, N. K. Duong, M. Reznikov, Christoph Renner, M. V. Milošević and C. Panagopoulos

Physical Review Letters 126 117205 (2021)

We report experimental coupling of chiral magnetism and superconductivity in [IrFeCoPt]/Nb heterostructures. The stray field of skyrmions with radius ≈50 nm is sufficient to nucleate antivortices in a 25 nm Nb film, with unique signatures in the magnetization, critical current, and flux dynamics, …

SeyedHosein Payandeh, Daniel Rentsch, Zbigniew Łodziana, Ryo Asakura, Radovan Bigler, Radovan Cerny, Corsin Battaglia and Arndt Remhof

Advanced Functional Materials 31 18, 2010046 (2021)

Hydroborate‐based solid electrolytes have recently been successfully employed in high voltage, room temperature all‐solid‐state sodium batteries. The transfer to analogous lithium systems has failed up to now due to the lower conductivity of the corresponding lithium compounds and their high…

Matteo Brighi, Fabrizio Murgia and Radovan Cerny

Advanced materials interfaces, 2101254 (2021)

A. Molodyk, S. Samoilenkov, A. Markelov, P. Degtyarenko, S. Lee, V. Petrykin, M. Gaifullin, A. Mankevich, A. Vavilov, B. Sorbom, J. Cheng, S. Garberg, L. Kesler, Z. Hartwig, S. Gavrilkin, A. Tsvetkov, T. Okada, S. Awaji, D. Abraimov, A. Francis, G. Bradford, D. Larbalestier, Carmine Senatore, Marco Bonura, A. E. Pantoja, S. C. Wimbush, N. M. Strickland and A. Vasiliev

Scientific Reports 11 2084 (2021)

The fusion power density produced in a tokamak is proportional to its magnetic field strength to the fourth power. Second-generation high temperature superconductor (2G HTS) wires demonstrate remarkable engineering current density (averaged over the full wire), JE, at very high magnetic fields,…

José Ferradas Troitino, Tommaso Bagni, C Barth, B Bordini, P Ferracin, Luc Gamperle, D Tommasini, Damien Zurmuehle and Carmine Senatore

Superconductor Science and Technology 34 3, 035008 (2021)

High-performance Nb3Sn superconducting wires have become one of the key technologies for the development of next generation accelerator magnets. While their large critical current densities enable the design of compact accelerator-quality magnets for their operation above 10 T, the noticeable…

Valerio Gulino, Matteo Brighi, Fabrizio Murgia, Peter Ngene, Radovan de Jongh, Radovan Cerny and Marcello Baricco

ACS Applied Energy Materials 4 2, 1228-1236 (2021)

LiBH4 has been widely studied as a solid-state electrolyte in Li-ion batteries working at 120 °C due to the low ionic conductivity at room temperature. In this work, by mixing with MgO, the Li-ion conductivity of LiBH4 has been improved. The optimum composition of the mixture is 53 v/v % of MgO,…

Sanja Burazer, Koen Robeyns, Laure Guenee, Gregor Mali, Fabrice Morelle, Voraksmy Ban, Teodoro Klaser, Radovan Filinchuk, Radovan Cerny and Jasminka Popović

Crystal Growth & Design 21 2, 770-778 (2021)

The novel high-temperature polymorph of sodium imidazolate reported in this paper was discovered in the mechanochemical reaction of NaIm with NaBH4 and later prepared directly by thermal treatment of the room-temperature polymorph of NaIm. Solid-state NMR was used for initial elucidation of…

Tommaso Bagni, Gianmarco Bovone, A. Rack, Diego Mauro, Christian Barth, Davide Matera, Florin Buta and Carmine Senatore

Scientific Reports 11 7767 (2021)

The electro-mechanical and electro-thermal properties of high-performance Restacked-Rod-Process(RRP) Nb3Sn wires are key factors in the realization of compact magnets above 15 T for the future particle physics experiments. Combining X-ray micro-tomography with unsupervised machine learning…

Bernat Mundet Bolos, Claribel Dominguez Ordonez, Jennifer Fowlie, Marta Gibert Gutierrez, Jean-Marc Triscone and Duncan T.L. Alexander

Nano Letters (2021)

Philippe Tueckmantel, Iaroslav Gaponenko, Nirvana Belen Caballero, Joshua C. Agar, Lane W. Martin, Thierry Giamarchi and Patrycja Paruch

Physical Review Letters 126 117606 (2021)

Ferroelectric materials provide a useful model system to explore the jerky, highly nonlinear dynamics of elastic interfaces in disordered media. The distribution of nanoscale switching event sizes is studied in two Pb(Zr0.2Ti0.8)O3 thin films with different disorder landscapes using piezoresponse…

Christophe Berthod, Haijing Zhang, Alberto Morpurgo and Thierry Giamarchi

Physical Review Research 3 4, 043036 (2021)

Impressive progress in the control of atomically thin crystals is now enabling the realization of gated structures in which two electrodes are separated by atomic scale distances. The electrical capacitance of these structures is determined by phenomena that are not relevant in capacitors with…

Tim Gazdic, Ivan Maggio-Aprile, Genda Gu and Christoph Renner

Physical Review X 11, 031040 (2021)

Low magnetic field scanning tunneling spectroscopy of individual Abrikosov vortices in heavily overdoped Bi2Sr2CaCu2O8+δ unveils a clear d-wave electronic structure of the vortex core, with a zero-bias conductance peak at the vortex center that splits with increasing distance from the core. We…

Bojja Aditya Reddy

Thèse (2021)

The fast paced research field of quantum electronics is dominated by the investigation of 2D van der Waals materials. This class of materials consist of different properties ranging from semiconductor, semimetal, superconductor, ferromagnetic and many more. Now with a further possibility to stack…

Andrea Amoretti, Martina Meinero, Daniel K. Brattan, Federico Caglieris, Enrico Giannini, Marco Affronte, Christian Hess, Bernd Buechner, Nicodemo Magnoli and Marina Putti

Physical review research 2 2, 023387 (2020)

High-temperature superconductors are strongly coupled systems which present a complicated phase diagram with many coexisting phases. This makes it difficult to understand the mechanism which generates their singular transport properties. Hydrodynamics, which mostly relies on the symmetries of the…

Dumitru Dumcenco and Enrico Giannini

Journal of crystal growth 548, 125799 (2020)

Alexandra Turrini

Thèse (2020)

A large part of the field of highly frustrated magnetism has been devoted to studying the phases and excitations in the rare earth titanates. In this thesis, two of these materials, Ho2Ti2O7 and Tb2Ti2O7, have been investigated in terms of changes in their magnetic phase and properties of their…

Philippe Tueckmantel

Thèse (2020)

In this thesis, the properties of ferroelectric domains and domain walls in Pb(Zr0.2Ti0.8)O3 are studied in three research avenues using piezoresponse force microscopy. In the first, the switching dynamics are investigated in the context of crackling physics. The importance of establishing the…

Davide Matera, Marco Bonura, Radovan Cerny, Siobhan Mckeown Walker, Florin Buta, D. LeBoeuf, X. Chaud, Enrico Giannini and Carmine Senatore

Scientific Reports 10 17656 (2020)

The upper critical field sets the thermodynamic limit to superconductivity. A big gap is present between the upper-critical-field values measured in MgB2 polycrystalline bulk superconductors and those of thin films, where values as high as ~ 50 T have been achieved at 4.2 K. Filling this gap…

Davide Matera

Thèse (2020)

The MgB2 superconductor has significant potential for practical applications. The main points of strength are its critical temperature close to 40 K, which may allow operating in cryogen-free environments, the low cost of precursor materials, and the ease of manufacture. However, a large gap is…

Aleksandra Zabuga, Marcelle Arrigo, Jérémie Teyssier, Sébastien R. Mouchet, Kanto Nishikawa, Masafumi Matsui, Miguel Vences and Michel C. Milinkovitch

Soft Matter 16 7, 1714-1721 (2020)

Females of some Asian salamanders of the genus Hynobius deposit in streams their eggs embedded in a translucent envelope called an ‘egg sac’. The edges of the envelope exhibit a spectacular blue-to-yellow iridescent glow, which instantaneously disappears when the sac is removed from water. First, …

T. Su, Philippe Reymond, Olivier Brina, Pierre Bouillot, Paolo Machi, Bénédicte Delattre, L. Jin, Karl-Olof Lövblad and Maria Isabel Vargas Gomez

American Journal of Neuroradiology 41 3, 488-494 (2020)

Flow diverter–induced hemodynamic change plays an important role in the mechanism of intracranial aneurysm occlusion. Our aim was to explore the relationship between aneurysm features and flow-diverter treatment of unruptured sidewall intracranial aneurysms.

SeyedHosein Payandeh, Ryo Asakura, Petroula Avramidou, Daniel Rentsch, Zbigniew Łodziana, Radovan Cerny, Arndt Remhof and Corsin Battaglia

Chemistry of Materials 32 3, 1101-1110 (2020)

Closo-borates and carba-closo-borates recently emerged as a promising class of solid electrolytes for all-solid-state batteries but are too expensive. Here, we introduce NaB11H14nido-borates as a new building block for solid electrolytes that can be synthesized via a cost-effective low-temperature…

Nicolas Ubrig, Zhe Wang, Jérémie Teyssier, Takashi Taniguchi, Kenji Watanabe, Enrico Giannini, Alberto Morpurgo and Marco Gibertini

2D Materials 7 1, 015007 (2020)

Chromium triiodide, CrI3, is emerging as a promising magnetic two-dimensional semiconductor where spins are ferromagnetically aligned within a single layer. Potential applications in spintronics arise from an antiferromagnetic ordering between adjacent layers that gives rise to spin filtering and a …

Bojja Aditya Reddy, Evgeniy Ponomarev, Ignacio Gutierrez Lezama, Nicolas Ubrig, Céline Barreteau, Enrico Giannini and Alberto Morpurgo

Nano Letters 20 2, 1322-1328 (2020)

The assembly of suitably designed van der Waals (vdW) heterostructures represents a new approach to produce artificial systems with engineered electronic properties. Here, we apply this strategy to realize synthetic semimetals based on vdW interfaces formed by two different semiconductors. Guided…

Mathias Jørgensen, Patrick T. Shea, Anton W. Tomich, Joel B. Varley, Marnik Bercx, Radovan Lovera, Radovan Cerny, Wei Zhou, Terrence J. Udovic, Vincent Lavallo, Torben R. Jensen, Brandon C. Wood and Vitalie Stavila

Chemistry of Materials 32 4, 1475-1487 (2020)

Solid-state ion conductors based on closo-polyborate anions combine high ionic conductivity with a rich array of tunable properties. Cation mobility in these systems is intimately related to the strength of the interaction with the neighboring anionic network and the energy for reorganizing the…

Luc Gamperle, José Ferradas Troitino, Christian Barth, B. Bordini, D. Tommasini and Carmine Senatore

Physical Review Research 2 013211 (2020)

The development of high-field accelerator magnets capable of providing 16-T dipolar fields is an indispensable technological breakthrough needed for the 100-TeV energy frontier targeted by the Future Circular Collider. As these magnets will be based on Nb3Sn Rutherford cables, the degradation of…

Simone Lisi, Xiaobo Lu, Tjerk Benschop, Tobias A. de Jong, Petr Stepanov, Jose R. Duran, Florian Margot, Irène Cucchi, Edoardo Cappelli, Andrew Scott Hunter, Anna Tamai, Viktor Kandyba, Alessio Giampietri, Alexei Barinov, Johannes Jobst, Vincent Stalman, Maarten Leeuwenhoek, Kenji Watanabe, Takashi Taniguchi, Louk Rademaker, Sense Jan van der Molen, Milan P. Allan, Dmitri K. Efetov and Felix Baumberger

Nature physics 17 2, 189-193 (2020)

We combine different imaging techniques and angle-resolved photoemission with simultaneous real- and momentum-space resolution (nano-ARPES) to directly map the band dispersion in twisted bilayer graphene devices near charge neutrality. Our experiments reveal large areas with a homogeneous twist…

I. Battisti, W. O. Tromp, Sara Ricco, R. S. Perry, A. P. Mackenzie, Anna Tamai, Felix Baumberger and M. P. Allan

npj Quantum Materials 5 1, 91 (2020)

Discrepancies in the low-energy quasiparticle dispersion extracted from angle-resolved photoemission, scanning tunneling spectroscopy, and quantum oscillation data are common and have long haunted the field of quantum matter physics. Here, we directly test the consistency of results from these…

David Soler Delgado

Thèse (2020)

Graphene is a layer of carbon atoms arranged in a honeycomb lattice. In 2004, Andre Geim and Konstantin Novoselov made a revolutionary breakthrough as they were able to isolate graphene giving rise to a cascade of experiments that revealed its unique electronic properties. Electron interaction in…

Claribel Dominguez Ordonez, Alexandru B. Georgescu, Bernat Mundet Bolos, Yajun Zhang, Jennifer Fowlie, Alain Mercy, Adrien Waelchli, Sara Catalano, Duncan T. L. Alexander, Philippe Ghosez, Antoine Georges, Andrew J. Millis, Marta Gibert Gutierrez and Jean-Marc Triscone

Nature materials 19 11, 1182-1187 (2020)

Christian Weymann, Céline Lichtensteiger, Stéphanie Fernandez‐Peña, Aaron B. Naden, Liv R. Dedon, Lane W. Martin, Jean-Marc Triscone and Patrycja Paruch

Advanced Electronic Materials 6 12, 2000852 (2020)

Deterministic control of the intrinsic polarization state of ferroelectric thin films is essential for device applications. Independently of the well-established role of electrostatic boundary conditions and epitaxial strain, the importance of growth temperature as a tool to stabilize a target…

Christian Weymann, Céline Lichtensteiger, Stéphanie Fernandez-Peña, Rohini Kumara Cordero Eduards and Patrycja Paruch

Applied Surface Science 516 146077 (2020)

Radio-frequency off-axis magnetron sputtering is a well established technique to produce high quality epitaxial thin films of complex oxides. It has been successfully used for over two decades to grow thin films, superlattices and even solid solutions. The main drawback is the common lack of in…

Gen Long, Hugo Henck, Marco Gibertini, Dumitru Dumcenco, Zhe Wang, Takashi Taniguchi, Kenji Watanabe, Enrico Giannini and Alberto Morpurgo

Nano letters 20 4, 2452-2459 (2020)

L. S. I. Veiga, M. Etter, Edoardo Cappelli, H. Jacobsen, J. G. Vale, C. D. Dashwood, D. Le, Felix Baumberger, D. F. McMorrow and R. S. Perry

Physical review materials 4 9, 094202 (2020)

Zizhuo Tony Jin, Michele Filippone and Thierry Giamarchi

Physical Review. B, Condensed Matter 102 205131 (2020)

We present a generic, compact formula for the current flowing in interacting and noninteracting systems which are driven out of equilibrium by biased reservoirs described by Lindblad jump operators. We show that, in the limit of high temperature and chemical potential, our formula is equivalent to…

Ivan Ardizzone, M. Zingl, Jérémie Teyssier, H. U. R. Strand, Oleg Peil, Jennifer Fowlie, A. B. Georgescu, Sara Catalano, Nimrod Bachar, Alexey Kuzmenko, Marta Gibert Gutierrez, Jean-Marc Triscone, Antoine Georges and Dirk Van Der Marel

Physical Review. B, Condensed Matter 102 15, 155148 (2020)

Materials with strong electronic correlations host remarkable — and technologically relevant — phenomena such as magnetism, superconductivity and metal-insulator transitions. Harnessing and controlling these effects is a major challenge, on which key advances are being made through lattice and…

Nirvana Belen Caballero, Elisabeth Agoritsas, Vivien Lecomte and Thierry Giamarchi

Physical Review. B, Condensed Matter 102 104204 (2020)

Controlling interfaces is highly relevant from a technological point of view. However, their rich and complex behavior makes them very difficult to describe theoretically, and hence to predict. In this work, we establish a pro- cedure to connect two levels of descriptions of interfaces: for a bulk…

Quintin N. Meier, Adrien Stucky, Jérémie Teyssier, Sinéad M. Griffin, Dirk Van Der Marel and Nicola A. Spaldin

Physical Review. B, Condensed Matter 102 014102 (2020)

Structural phase transitions described by Mexican hat potentials should in principle exhibit aspects of Higgs and Goldstone physics. Here, we investigate the relationship between the phonons that soften at such structural phase transitions and the Higgs- and Goldstone-boson analogues associated…

Gernot Scheerer, Margherita Boselli, Dorota Pulmannova, Willem Rischau, Adrien Waelchli, Stefano Gariglio, Enrico Giannini, Dirk Van Der Marel and Jean-Marc Triscone

Condensed Matter 5 4, 60 (2020)

SrTiO3 is an insulating material which, using chemical doping, pressure, strain or isotope substitution, can be turned into a ferroelectric material or into a superconductor. The material itself, and the two aforementioned phenomena, have been subjects of intensive research of Karl Alex Müller and …

Kai Wang, B. Xu, Willem Rischau, Nimrod Bachar, Bastien Michon, Jérémie Teyssier, Y. Qiu, T. Ohtsuki, Bing Cheng, N. P. Armitage, S. Nakatsuji and Dirk Van Der Marel

Nature Physics 16 12, 1194-1198 (2020)

Nd2Ir2O7 is a correlated semimetal with the pyrochlore structure, in which competing spin-orbit coupling and electron-electron interactions are believed to induce a time-reversal symmetry broken Weyl semimetal phase characterized by pairs of topologically protected Dirac points at the Fermi energy. …

Giulia Tenasini, Edoardo Martino, Nicolas Ubrig, Nirmal J. Ghimire, Helmuth Berger, Oksana Zaharko, Fengcheng Wu, J. F. Mitchell, Ivar Martin, László Forró and Alberto Morpurgo

Physical Review Research 2 2, 023051 (2020)

The discovery of the anomalous Hall effect (AHE) in bulk metallic antiferromagnets (AFMs) motivates the search of the same phenomenon in two-dimensional (2D) systems, where a quantized anomalous Hall conductance can, in principle, be observed. Here we present experiments on microfabricated devices…

Nicolas Ubrig, Evgeniy Ponomarev, Johanna Zultak, Daniil Domaretskiy, Viktor Zólyomi, Daniel Terry, James Howarth, Ignacio Gutierrez Lezama, Alexander Zhukov, Zakhar R. Kudrynskyi, Zakhar D. Kovalyuk, Amalia Patané, Takashi Taniguchi, Kenji Watanabe, Roman V. Gorbachev, Vladimir I. Fal'ko and Alberto Morpurgo

Nature Materials (2020)

Van der Waals (vdW) materials offer new ways to assemble artificial electronic media with properties controlled at the design stage, by combining atomically defined layers into interfaces and heterostructures. Their potential for optoelectronics stems from the possibility to tailor the spectral…

Sumit Ranjan Maity

Thèse (2020)

The fundamental understanding of the microscopic origin of oxygen diffusion is essential to design and optimize new oxygen ion conductors for technological applications. In this work, using single crystal neutron diffraction studies on Sr and O-doped Nd2NiO4+δ compounds, we have shown strong…

Alexander Schober, Jennifer Fowlie, Mael Guennou, Mads C. Weber, Hongjian Zhao, Jorge Íñiguez, Marta Gibert, Jean-Marc Triscone and Jens Kreisel

APL Materials 8 6, 061102 (2020)

Thierry C. van Thiel, Jennifer Fowlie, Carmine Autieri, Nicola Manca, Makars Šiškins, Dmytro Afanasiev, Stefano Gariglio and Andrea Caviglia

ACS Materials Letters 2 4, 389-394 (2020)

Oxide heterointerfaces constitute a rich platform for realizing novel functionalities in condensed matter. A key aspect is the strong link between structural and electronic properties, which can be modified by interfacing materials with distinct lattice symmetries. Here, we determine the effect of…

Marco Bonura, He Huang, Chao Yao, Yanwei Ma and Carmine Senatore

Superconductor Science and Technology 33 095008 (2020)

Understanding the mechanisms that limit the current transport in granular iron-based superconductors is necessary to unlock their potential for magnet applications. This paper reports the transport critical current surface IC(T,H) of powder-in-tube Ag/Ba1−xKxFe2As2 tapes densified by flat rolling …

Jakob B. Grinderslev, Lars H. Jepsen, Young-Su Lee, Kasper T. Møller, Radovan Cho, Radovan Cerny and Torben R. Jensen

Inorganic Chemistry 59 17, 12733-12747 (2020)

Metal borohydrides are a fascinating and continuously expanding class of materials, showing promising applications within many different fields of research. This study presents 17 derivatives of the hydrogen-rich ammonium borohydride, NH4BH4, which all exhibit high gravimetric hydrogen densities…

A Delhomme, D Vaclavkova, A Slobodeniuk, M Orlita, M Potemski, D M Basko, K Watanabe, T Taniguchi, Diego Mauro, Céline Barreteau, Enrico Giannini, Alberto Morpurgo, Nicolas Ubrig and C Faugeras

2D Materials 7 041002 (2020)

Optical selection rules in monolayers of transition metal dichalcogenides and of their heterostructures are determined by the conservation of the z-component of the total angular momentum—J Z = L Z +S Z – associated with the C3 rotational lattice symmetry which assumes half integer values…

Kai Wang

Thèse (2020)

The strong correlated electronic materials we focused on this thesis are 5d transition metal oxides. The interplay of strong spin-orbit coupling (SOC) and intermediate on-site Coulomb repulsion U can give rise to the novel collective phenomenon. During this Ph.D., I focused on two iridate families…

Irène Cucchi

Thèse (2020)

Van der Waals materials can be exfoliated down to atomically thin crystals, offering potential to explore physics in lower dimensionality. In this thesis, I investigated their topological electronic structure with ARPES. I studied mono-, bi- and few-layer Td-WTe2. The small size of exfoliated…

Marc Philippi

Thèse (2020)

In 2004, A. Geim and K. Novoselov realized the first isolation of a one-atom-thick material, graphene. The discovery of graphene, which was immediately followed by that of many other 2D materials with a large variety of physical properties, has paved the way to study physical properties in…

Radovan Cerny, Matteo Brighi and Fabrizio Murgia

Chemistry — An International Journal 2 4, 805-826 (2020)

The crystal structures of inorganic hydroborates (salts and coordination compounds with anions containing hydrogen bonded to boron) except for the simplest anion, borohydride BH4−, are analyzed regarding their structural prototypes found in the inorganic databases such as Pearson’s Crystal Data…

Matteo Brighi, Fabrizio Murgia and Radovan Cerny

Cell Reports Physical Science 1 100217 (2020)

Na-based hydroborates, such as NaCB9H10, Na2B10H10, NaCB11H12, and Na2B12H12, are known for their high ionic conductivity above a phase transition, usually far from room temperature. Here, a systematic investigation to suppress this phase transition and thus to stabilize novel crystal structures is …

Tim Gazdic

Thèse (2020)

We study high temperature superconductivity of heavily overdoped (p~0.22) Bi2Sr2CaCu2O8+d with the objective to find signatures of the more conventional superconductivity anticipated in comparison to its more widely studied underdoped counterpart. We find some similarities as well as distinctly…

Carlota De Lacerda Salgado, Laure Guenee, Radovan Cerny, Eric Allémann and Olivier Jordan

International Journal of Pharmaceutics 589 119783 (2020)

Osteoarthritis (OA), the most common form of arthritis, is characterized by chronic inflammation, degeneration of articular cartilage and whole joints. Local delivery by intra-articular (IA) injection of small molecules is an established treatment to relieve pain and improve joint motion, requiring …

Alexandre Gloter, Giulio Tieri, Danfeng Li, Marco Caputo, Vladimir N. Strocov, Odile Stéphan, Jean-Marc Triscone and Stefano Gariglio

APL Materials 8 4, 041103 (2020)

Realization of heterostructures containing multiple two-dimensional electron liquids requires a fine control of the fabrication process. Here, we report a structural and spectroscopy study of LaAlO3/SrTiO3/LaAlO3 trilayers grown on the SrTiO3 substrate by pulsed-laser deposition. Scanning…

M. Caputo, Margherita Boselli, A. Filippetti, S. Lemal, Danfeng Li, A. Chikina, C. Cancellieri, T. Schmitt, Jean-Marc Triscone, P. Ghosez, Stefano Gariglio and V. N. Strocov

Physical Review Materials 4 3, 035001 (2020)

Heterostructures of transition metal oxides perovskites represent an ideal platform to explore exotic phenomena involving the complex interplay between the spin, charge, orbital and lattice degrees of freedom available in these compounds. At the interface between such materials, this interplay can…

Yigang Yan, Wilke Dononelli, Mathias Jørgensen, Jakob B. Grinderslev, Young-Su Lee, Radovan Cho, Radovan Cerny, Bjørk Hammer and Torben R. Jensen

Physical Chemistry Chemical Physics 22 17, 9204-9209 (2020)

Light weight and cheap electrolytes with fast multi-valent ion conductivity can pave the way for future high-energy density solid-state batteries, beyond the lithium-ion battery. Here we present the mechanism of Mg-ion conductivity of monoammine magnesium borohydrides, Mg(BH4)2·NH3. Density…

Edoardo Cappelli, Willem O. Tromp, Siobhan Mckeown Walker, Anna Tamai, Marta Gibert Gutierrez, Felix Baumberger and Flavio Yair Bruno

APL Materials 8 5, 051102 (2020)

Irène Cucchi, A. Marrazzo, Edoardo Cappelli, Sara Ricco, F. Y. Bruno, Simone Lisi, M. Hoesch, T. K. Kim, C. Cacho, Céline Besnard, Enrico Giannini, N. Marzari, Marco Gibertini, Felix Baumberger and Anna Tamai

Physical Review Letters 124 106402 (2020)

Yigang Yan, Jakob B. Grinderslev, Young-Su Lee, Mathias Jørgensen, Young Whan Cho, Radovan Cerny and Torben R. Jensen

Chemical Communications 56 28, 3971-3974 (2020)

Hemiammine lithium borohydride, LiBH₄·1/2NH₃, is characterized and a new Li⁺ conductivity mechanism is identified. It exhibits a Li⁺ conductivity of 7 × 10⁻⁴ S cm⁻¹ at 40 °C in the solid state and 3.0 × 10⁻² S cm⁻¹ at 55 °C after melting. The molten state of…

Diego Mauro

Thèse (2020)

Graphene is the name given to a sheet of carbon atoms arranged in a honeycomb lattice. Although its electronic properties have been investigated since the 1940s. graphene remained for long a mere academic curiosity. The reason is because 2D materials were believed to be not present in nature. In…

Md. Shahriar A. Hossain, Carmine Senatore, Yusuke Yamauchi, Mislav Mustapić, Daniel Gajda, Dipak Patel, Aslam Khan, Jung Ho Kim, Andrzej J Morawski and René-Louis Flukiger

Journal of Magnesium and Alloys 8 2, 493-498 (2020)

The effect of cold high pressure densification (CHPD) on anisotropy of the critical current density (Jc) in « in situ » single core binary and alloyed MgB2 tapes has been determined as a function of temperatures at 4.2 K, 20 K and 25 K as well as at applied magnetic fields up to 19 T. The…

José Ferradas Troitino, G. Ambrosio, H. Bajas, L. Brouwer, P. Ferracin, S. Izquierdo Bermudez, J.V. Lorenzo Gomez, F.J. Mangiarotti, J.C. Perez, E. Ravaioli, E. Tapani Taakala, G. Vallone and Carmine Senatore

Cryogenics 106 103054 (2020)

New high-field accelerator magnets based on Nb3Sn superconductors are pushing the boundaries of magnet design and quench protection towards new limits. While their large stored energies and current densities result in a very challenging scenario for magnet protection, their great electromagnetic…

Md. Shahriar A. Hossain, Mislav Mustapić, Daniel Gajda, Carmine Senatore, Dipak Patel, Yusuke Yamauchi, Mahboobeh Shahbazi and René-Louis Flukiger

Journal of Magnetism and Magnetic Materials 497 166046 (2020)

The anisotropy of the critical current density, the n-factor and the irreversibility field of mono-core in-situ MgB2 tapes have been studied at various magnetic field orientations and temperatures. Undoped as well as silicon carbide (SiC) and malic acid (C4H6O5) added tapes were studied. The…

F. Avino, D. Fonnesu, T. Koettig, Marco Bonura, Carmine Senatore, A.T. Perez Fontenla, A. Sublet and M. Taborelli

Thin Solid Films 706 138058 (2020)

The production of a dense and void-free thin film on large and complex substrates is still a challenge in Physical Vapor Deposition. High Power Impulse Magnetron Sputtering (HiPIMS) with voltage inversion (positive pulse) after the main negative pulse is an attractive alternative to a negatively…

C. W. Nicholson, E. F. Schwier, K. Shimada, H. Berger, M. Hoesch, Christophe Berthod and C. Monney

Physical Review. B, Condensed Matter 101 045412 (2020)

We revisit charge density wave (CDW) behavior in the archetypal quasi-one-dimensional (quasi-1D) material NbSe3 by high-resolution angle-resolved photoemission spectroscopy measurements utilizing a microfocused laser with a photon energy of 6.3 eV. We present a detailed view of the electronic…

Diego Mauro, Hugo Henck, Marco Gibertini, Michele Filippone, Enrico Giannini, Ignacio Gutierrez Lezama and Alberto Morpurgo

2D Materials 7 025042 (2020)

Monolayer jacutingaite (Pt2HgSe3) has been recently identified as a candidate quantum spin Hall system with a 0.5 eV band gap, but no transport measurements have been performed so far on this material, neither in monolayer nor in the bulk. By using a dedicated high-pressure technique, we grow…

Davide Filippo Valentinis and Christophe Berthod

Physical Review. B, Condensed Matter 102 054518 (2020)

The pairing temperature of superconducting thin films is expected to display, within the Bardeen–Cooper–Schrieffer theory, oscillations as a function of the film thickness. We show that the pattern of these oscillations switches between two different periodicities at a density-dependent value…

Sebastian Greschner, Suman Mondal and Tapan Mishra

Physical Review. A 101 053630 (2020)

Experiments with bosonic atoms in optical superlattices allow for the interesting possibility to study the adiabatic quantized pumping of bosonic atoms in the presence of interactions. We investigate this exotic phenomenon for bound bosonic pairs in the paradigmatic Su-Schrieffer-Heeger model where …

Kyle P. Kelley, Yao Ren, Anna N. Morozovska, Eugene A. Eliseev, Yoshitaka Ehara, Hiroshi Funakubo, Thierry Giamarchi, Nina Balke, Rama K. Vasudevan, Ye Cao, Stephen Jesse and Sergei V. Kalinin

ACS Nano 14 8, 10569-10577 (2020)

Domain walls and topological defects in ferroelectric materials have emerged as a powerful tool for functional electronic devices including memory and logic. Similarly, wall interactions and dynamics underpin a broad range of mesoscale phenomena ranging from giant electromechanical responses to…

R. Citro, E. Demler, Thierry Giamarchi, M. Knap and E. Orignac

Physical Review Research 2 033187 (2020)

Lattice modulation spectroscopy is a powerful tool for probing low-energy excitations of interacting many-body systems. By means of bosonization we analyze the absorbed power in a one-dimensional interacting quantum gas of bosons or fermions, subjected to a periodic drive of the optical lattice….

Michele Filippone, Arthur Marguerite, Karyn Le Hur, Gwendal Fève and Christophe Mora

Entropy 22 8, 847 (2020)

This review illustrates how Local Fermi Liquid (LFL) theories describe the strongly correlated and coherent low-energy dynamics of quantum dot devices. This approach consists in an effective elastic scattering theory, accounting exactly for strong correlations. Here, we focus on the mesoscopic…

João S. Ferreira and Michele Filippone

Physical Review. B, Condensed Matter 102 184304 (2020)

We study the ballistic-to-diffusive transition induced by the weak breaking of integrability in a boundary-driven XXZ spin chain. Studying the evolution of the spin current density Js as a function of the system size L, we show that, accounting for boundary effects, the transition has a nontrivial…

Lorenzo Cardarelli, Sebastian Greschner and Luis Santos

Physical Review Letters 124 123601 (2020)

We explore the ground-state physics of two-dimensional spin-1/2 U(1) quantum link models, one of the simplest nontrivial lattice gauge theories with fermionic matter within experimental reach for quantum simulations. Whereas in the large mass limit we observe Neél-like vortex-antivortex and…

Hepeng Yao, Thierry Giamarchi and Laurent Sanchez-Palencia

Physical Review Letters 125 060401 (2020)

The emergence of a compressible insulator phase, known as the Bose glass, is characteristic of the interplay of interactions and disorder in correlated Bose fluids. While widely studied in tight-binding models, its observation remains elusive owing to stringent temperature effects. Here we show…

Andreas Haller, Matteo Rizzi and Michele Filippone

Physical Review Research 2 023058 (2020)

In strictly one-dimensional systems, repulsive interactions tend to reduce particle mobility on a lattice. Therefore, the Drude weight, controlling the divergence at zero-frequency of optical conductivities in perfect conductors, is lower than in noninteracting cases. We show that this is not the…

Anne-Maria Visuri, M. Lebrat, S. Häusler, L. Corman and Thierry Giamarchi

Physical Review Research 2 023062 (2020)

We analyze the spin transport through a finite-size one-dimensional interacting wire connected to noninteracting leads. By combining renormalization-group arguments with other analytic considerations such as the memory function technique and instanton tunneling, we find the temperature dependence…

Jacopo Valsecchi

Thèse (2020)

Polarized neutrons is perhaps one of the most promising and fascinating field of research in neutron imaging. Whereas polarized neutron imaging (PNI) has been introduced about a decade ago, the potential for a wide field of applications is enormous. Parallel, neutron grating interferometry has…

Marcello Spera, Alessandro Scarfato, Arpad Pasztor, Enrico Giannini, D. R. Bowler and Christoph Renner

Physical Review Letters 125 267603 (2020)

Charge density waves (CDWs) are understood in great detail in one dimension, but they remain largely enigmatic in two-dimensional systems. In particular, numerous aspects of the associated energy gap and the formation mechanism are not fully understood. Two long-standing riddles are the amplitude…

Zizhuo Tony Jin

SciPost physics 9 1, 004 (2020)

We study the equilibration properties of isolated ergodic quantum systems initially prepared in a cat state, i.e a macroscopic quantum superposition of states. Our main result consists in showing that, even though decoherence is at work in the mean, there exists a remnant of the initial quantum…

T. Jaouen, B. Hildebrand, M.-L. Mottas, M. Di Giovannantonio, P. Ruffieux, M. Rumo, C. W. Nicholson, E. Razzoli, Céline Barreteau, Alberto Ubaldini, Enrico Giannini, F. Vanini, H. Beck, C. Monney and P. Aebi

Physical review. B 100 7, 075152 (2019)

M.-L. Mottas, T. Jaouen, B. Hildebrand, M. Rumo, F. Vanini, E. Razzoli, Enrico Giannini, Céline Barreteau, D. R. Bowler, C. Monney, H. Beck and P. Aebi

Physical review. B 99 15, 155103 (2019)

Iaroslav Gaponenko, Loïc Musy, Sébastien Muller and Patrycja Paruch

Engineering research express 1 2, 025042 (2019)

From the survival of biological systems to the surface electrochemistry of materials, ambient and surface water plays a key role, and understanding its contribution is essential to describe the observed behaviours fully. Thus, precise measurement and control of relative humidity are essential in…

Olivier Brina, Pierre Bouillot, Philippe Reymond, Anna Siri Naemi Luthman, Corrado Santarosa, Mohamed Fahrat, Karl-Olof Lövblad, Paolo Machi, Bénédicte Delattre, Vitor Mendes Pereira and Maria Isabel Vargas Gomez

American Journal of Neuroradiology (2019)

Flow-diverter stents are widely used for the treatment of wide-neck intracranial aneurysms. Various parameters may influence intracranial aneurysm thrombosis, including the flow reduction induced by flow-diverter stent implantation, which is assumed to play a leading role. However, its actual…

Marcello Spera, Alessandro Scarfato, Enrico Giannini and Christoph Renner

Physical Review. B, Condensed Matter 99 155133, 1-7 (2019)

We report a detailed study of the microscopic effects of Cu intercalation on the charge density wave (CDW) in 1T-CuxTiSe2. Scanning tunneling microscopy and spectroscopy reveal a unique, Cu-driven spatial texturing of the charge-ordered phase, with the appearance of energy-dependent CDW patches and …

Stefano Gariglio, Andrea Caviglia, Jean-Marc Triscone and M Gabay

Reports on Progress in Physics 82 012501 (2019)

Within the last twenty years, the status of the spin–orbit interaction has evolved from that of a simple atomic contribution to a key effect that modifies the electronic band structure of materials. It is regarded as one of the basic ingredients for spintronics, locking together charge and spin…

Marcello Spera

Thèse (2019)

In this work, we performed a detailed scanning tunnelling microscopy and spectroscopy study of the charge density wave state of 1T-CuxTiSe2 in a wide range of Cu concentrations (0 Archive ouverte UNIGE

Renan Villarreal, Christopher J. Kirkham, Alessandro Scarfato, David R. Bowler and Christoph Renner

Journal of Applied Physics 125 18, 184301 (2019)

The surface diffusion potential landscape plays an essential role in a number of physical and chemical processes such as self-assembly and catalysis. Diffusion energy barriers can be calculated theoretically for simple systems, but there is currently no experimental technique to systematically…

O. Ivashko, M. Horio, W. Wan, N. B. Christensen, D. E. McNally, E. Paris, Y. Tseng, N. E. Shaik, H. M. Rønnow, H. I. Wei, C. Adamo, Céline Lichtensteiger, M. Gibert, M. R. Beasley, K. M. Shen, J. M. Tomczak, T. Schmitt and J. Chang

Nature Communications 10 1, 1-8 (2019)

The transition temperature Tc of unconventional superconductivity is often tunable. For a monolayer of FeSe, for example, the sweet spot is uniquely bound to titanium-oxide sub- strates. By contrast for La2−xSrxCuO4 thin films, such substrates are sub-optimal and the highest Tc is instead…

Adrien Girard, Michal Stekiel, Dominik Spahr, Wolfgang Morgenroth, Björn Wehinger, Victor Milman, Tra Nguyen-Thanh, Alessandro Mirone, Arianna Minelli, Luigi Paolasini, Alexei Bosak and Bjoern Winkler

Journal of Physics. Condensed Matter 31 5, 055703 (2019)

In order to resolve inconsistencies encountered in published data for SrSO, the elasticity and the phase stability of celestite has been studied using thermal diffuse scattering, high pressure powder synchrotron x-ray diffraction, Raman scattering and DFT calculations. The structure of SrSO is…

Radovan Cerny and Vincent Favre-Nicolin

International Tables for Crystallography. Volume H, Powder Diffraction, Chapter4.5,p.442-451 (2019)

Powder diffraction is the mostly widely used crystallographic method, with applications spanning all aspects of structural science. This new volume of International Tables for Crystallography covers all aspects of the technique with over 50 chapters written by experts in the field. Consisting of…

Valerio Gulino, Matteo Brighi, Erika M. Dematteis, Fabrizio Murgia, Radovan Nervi, Radovan Cerny and Marcello Baricco

Chemistry of Materials 31 14, 5133-5144 (2019)

This study shows a flexible system that offers promising candidates for Li-based solid-state electrolytes. The Br− substitution for BH4 − stabilizes the hexagonal structure of LiBH4 at room temperature (RT), whereas Cl− is soluble only at higher temperatures. Incorporation of chloride in a…

Anh Ha Dao, Radovan López-Aranguren, Radovan Cerny, Olivier Guiader, Junxian Zhang, Fermín Cuevas, Michel Latroche and Christian Jordy

Solid State Ionics 339 114987, 1-6 (2019)

The development of electrochemically stable Li-ion solid electrolytes with high conductivity is crucial for a successful performance of all-solid-state batteries. Li-containing argyrodite sulfides with the formula Li6PS5Z (Z=Cl, Br, I) are considered as promising solid electrolytes due to their…

Sanja Burazer, Fabrice Morelle, Radovan Filinchuk, Radovan Cerny and Jasminka Popović

Inorganic Chemistry 58 10, 6927-6933 (2019)

The first bimetallic imidazolates containing alkali and alkaline earth metals, NaMgIm3 and KMgIm3, respectively, are prepared by mechanochemical synthesis and are reported in this paper. NaMgIm3 has been prepared by the reaction between NaIm and Mg(BH4)2 as well as directly from NaIm and MgIm2….

Arpad Pasztor, Alessandro Scarfato, Marcello Spera, Céline Barreteau, Enrico Giannini and Christoph Renner

Physical Review Research 1 3, 033114 (2019)

The charge density wave (CDW) in solids is a collective ground state combining lattice distortions and charge ordering. It is defined by a complex order parameter with an amplitude and a phase. The amplitude and wavelength of the charge modulation are readily accessible to experiment. However,…

Margherita Boselli

Thèse (2019)

In 2004 Ohtomo and Hwang discovered that the interface between two band insulators, LaAlO3 and SrTiO3, is conducting. This thesis focuses on the properties of the LaAlO3/SrTiO3 interface at the nanoscale. First, we developed a technique to realize conducting wires of nanometric scale in insulating…

Stéphanie Girardclos, Mathilde Fontanet, Yasmine Atlas, Sébastien Muller, Mathieu Crettenand, Didier Maurice Grandjean, Léonard Truscello, Romain Alexandre Boillat, Ignace Cuttat and Olivier Maulini

Rapport de recherche, 28 (2019)

Rapport de la Commission de l’Assemblée de l’Université de Genève chargée de recenser les problèmes de gouvernance institutionnels et leurs conséquences pour les membres de la communauté afin de formuler des suggestions.

Florin Buta and Carmine Senatore

IEEE Transactions on Applied Superconductivity 29 5, 6000709 (2019)

The study of next-generation high-energy accelerators based on 16 T dipoles has emphasized the need for higher performance, cost-effective Nb₃Sn superconducting wires. A Conductor Development Program aiming to reach a non-copper critical current density (Jc) of 1500 A/mm² at 16 T and 4.2 K has…

Haijing Zhang, Christophe Berthod, Helmuth Berger, Thierry Giamarchi and Alberto Morpurgo

Nano Letters (2019)

Ionic liquid gated field-effect transistors (FETs) based on semiconducting transition metal dichalcogenides (TMDs) are used to study a rich variety of extremely interesting physical phenomena, but important aspects of how charge carriers are accumulated in these systems are not understood. We…

Noam Kestin

Thèse (2019)

Dans cette thèse, nous nous intéressons aux effets thermiques dans des systèmes quantiques de spin fortement corrélés en basse dimension. Ces systèmes peuvent être étudiés à l’aide de matériaux dans différentes phases via l’application de forts champs magnétiques externes. La façon…

Lijuan Guo, Sebastian Greschner, Siyu Zhu and Wanzhou Zhang

Physical Review. A 100 3, 033614 (2019)

We study the extended Jaynes-Cummings-Hubbard model on triangular cavity lattices and zigzag ladders. By using density-matrix renormalization-group methods, we observe various types of solids with different density patterns and find evidence for light supersolids, which exist in extended regions of …

Sebastian Greschner and Tapan Mishra

Physical Review. B, Condensed Matter 100 14, 144405 (2019)

We theoretically study the ground-state phase diagram of strongly interacting bosons on a generalized zigzag ladder model, the railroad-trestle (RRT) model. By means of analytical arguments in the limits of decoupled chains and the case of vanishing fillings as well as extensive DMRG calculations,…

Quentin Faure, Shintaro Takayoshi, Virginie Simonet, Béatrice Grenier, Martin Månsson, Jonathan S. White, Gregory S. Tucker, Christian Ruegg, Pascal Lejay, Thierry Giamarchi and Sylvain Petit

Physical Review Letters 123 2, 027204 (2019)

Combining inelastic neutron scattering and numerical simulations, we study the quasi-one-dimensional Ising anisotropic quantum antiferromagnet BaCo2V2O8 in a longitudinal magnetic field. This material shows a quantum phase transition from a Ne ́el ordered phase at zero field to a longitudinal…

Michele Filippone, Charles Bardyn, Sebastian Greschner and Thierry Giamarchi

Physical Review Letters 123 8, 086803 (2019)

We study the Hall response of two-dimensional lattice systems of charged fermions in a transverse magnetic field, in the ballistic coherent limit. We identify a setup in which this response vanishes over wide regions of parameter space: the “Landauer-Büttiker” setup commonly studied for…

A. Kantian, M. Dolfi, M. Troyer and Thierry Giamarchi

Physical Review. B, Condensed Matter 100 7, 075138 (2019)

The so-called minimal models of unconventional superconductivity are lattice models of interacting elec- trons derived from materials in which electron pairing arises from purely repulsive interactions. Showing unambiguously that a minimal model actually can have a superconducting ground state…

M. A. Valbuena, P. Chudzinski, S. Pons, S. Conejeros, P. Alemany, E. Canadell, H. Berger, E. Frantzeskakis, J. Avila, M. C. Asensio, Thierry Giamarchi and M. Grioni

Physical Review. B, Condensed Matter 99 7, 075118 (2019)

In materials with nearly commensurate band filling the electron liquid may spontaneously separate into components with distinct properties, yielding complex intra- and interunit cell ordering patterns and a reduced dimensionality. Polarization-dependent angle-resolved photoemission data with…

Shintaro Takayoshi, Yuta Murakami and Philipp Werner

Physical Review. B, Condensed Matter 99 18, 184303 (2019)

We theoretically study the high-harmonic generation (HHG) in one-dimensional spin systems. While in electronic systems the driving by ac electric fields produces radiation from the dynamics of excited charges, we consider here the situation where spin systems excited by a magnetic field pulse…

Naushad Ahmad Kamar, Adrian Kantian and Thierry Giamarchi

Physical Review. A 100 2, 023614 (2019)

We analyze the behavior of a mobile quantum impurity, restricted to a one-dimensional motion, in a bath formed by a two-leg bosonic ladder through a combination of field theory [Tomonaga-Luttinger liquid (TLL)] and numerical (density-matrix renormalization group) techniques. We compute the Green’s…

Charles Bardyn, Michele Filippone and Thierry Giamarchi

Physical Review. B, Condensed Matter 99 3, 035150 (2019)

The notion of topological (Thouless) pumping in topological phases is traditionally associated with Laughlin’s pump argument for the quantization of the Hall conductance in two-dimensional (2D) quantum Hall systems. It relies on magnetic flux variations that thread the system of interest without…

Marc Raventos Tato

Thèse (2019)

In this thesis we present a combination of experimental and analytic approaches to improve the capabilities of polychromatic diffractive neutron imaging. This has been realized by following two relevant study cases: the transmitted neutron signal from powder crystals and the diffracted neutron…

Naushad Ahmad Kamar

Thèse (2019)

In this thesis, we work on three problems. In the first problem, we work on a local time-dependent potential in a one-dimensional interacting bath. This work is motivated by cold atomic experiments, where one can shake the ultracold systems by using a time-dependent potential. We use linear…

C.D. Dashwood, H. Miao, J.G. Vale, D. Ishikawa, D.A. Prishchenko, V.V. Mazurenko, V.G. Mazurenko, R.S. Perry, G. Cao, Alberto De La Torre, Felix Baumberger, A.Q.R. Baron, D.F. McMorrow and M.P.M. Dean

Physical Review. B, Condensed Matter 100 085131, 1-8 (2019)

The mixing of orbital and spin character in the wave functions of the 5d iridates has led to predictions of strong couplings among their lattice, electronic, and magnetic degrees of freedom. As well as realizing a novel spin-orbit assisted Mott-insulating ground state, the perovskite iridate…

Diogo C. Vaz, Paul Noël, Annika Johansson, Börge Göbel, Flavio Yair Bruno, Gyanendra Singh, Siobhan Mckeown Walker, Felix Trier, Luis M. Vicente-Arche, Anke Sander, Sergio Valencia, Pierre Bruneel, Manali Vivek, Marc Gabay, Nicolas Bergeal, Felix Baumberger, Hanako Okuno, Agnès Barthélémy, Albert Fert, Laurent Vila, Ingrid Mertig, Jean-Philippe Attané and Manuel Bibes

Nature Materials (2019)

While spintronics has traditionally relied on ferromagnetic metals as spin generators and detectors, spin–orbitronics exploits the efficient spin–charge interconversion enabled by spin–orbit coupling in non-magnetic systems. Although the Rashba pic- ture of split parabolic bands is often used …

Emilie Yvonne Jeanne Didelot, Zbigniew Łodziana, Fabrizio Murgia and Radovan Cerny

Crystals 9 7, 372 (2019)

Magnesium and 3d transition metals closo-borates were prepared by mechanosynthesis (ball milling) of the mixtures Na₂B₁₂H₁₂ + MCl₂ (M = Mn, Fe, Co, Ni, Mg), followed by addition of ethanol or methanol and drying under dynamic vacuum. The dead mass of NaCl is partly removed by…

L. Thiel, Zhe Wang, M. A. Tschudin, D. Rohner, Ignacio Gutierrez Lezama, Nicolas Ubrig, Marco Gibertini, Enrico Giannini, Alberto Morpurgo and P. Maletinsky

Science 364 6444, 973-976 (2019)

The discovery of ferromagnetism in two-dimensional (2D) van der Waals (vdW) crystals has generated widespread interest. Making further progress in this area requires quantitative knowledge of the magnetic properties of vdW magnets at the nanoscale. We used scanning single-spin magnetometry based on …

Noam Kestin and Thierry Giamarchi

Physical Review. B, Condensed Matter 99 195121 (2019)

We study the correlation functions of quantum spin 1/2 ladders at finite temperature, under a magnetic field, in the gapless phase at various relevant temperatures T≠0, momentum q and frequencies ω. We compute those quantities using the time dependent density matrix renormalization group…

Anna Tamai, M. Zingl, E. Rozbicki, Edoardo Cappelli, Sara Ricco, Alberto De La Torre, Siobhan Mckeown Walker, Flavio Yair Bruno, P.D.C. King, W. Meevasana, M. Shi, M. Radovic, N.C. Plumb, A.S. Gibbs, A.P. Mackenzie, Christophe Berthod, Hugo Strand, M. Kim, Antoine Georges and Felix Baumberger

Physical Review X 9 021048, 1-18 (2019)

We explore the interplay of electron-electron correlations and spin-orbit coupling in the model Fermi liquid Sr2RuO4 using laser-based angle-resolved photoemission spectroscopy. Our precise measurement of the Fermi surface confirms the importance of spin-orbit coupling in this material and reveals…

Jennifer Fowlie, Céline Lichtensteiger, Marta Gibert Gutierrez, Hugo Meley, Philip Willmott and Jean-Marc Triscone

Nano Letters 19 6, 4188-4194 (2019)

In this study, we analyze how the octahedral tilts and rotations of thin films of LaNiO₃ and LaAlO₃ grown on different substrates, determined using synchrotron X-ray diffraction-measured half-integer Bragg peaks, depend upon the total film thickness. We find a striking difference between films…

Juan Francisco Mora Cardozo

Thèse (2019)

Ionic liquids (ILs) are liquids composed entirely of ions, therefore they screen every charged perturbation and present ionic conductivity. Recent studies focus in particular on the so-called room temperature ionic liquids (RTILs), that are organic/inorganic salts with melting point or glass…

José Ferradas Troitino, Giorgio Ambrosio, Hugo Bajas, Bernardo Bordini, Paolo Ferracin, Jerome Fleiter, Susana Izquierdo Bermudez, Jose Vicente Lorenzo Gomez, Juan Carlos Perez, Giorgio Vallone and Carmine Senatore

IEEE Transactions on Applied Superconductivity 29 5, 1-6 (2019)

High field superconducting magnets for particle accelerators often exhibit premature quenches. Once a normal zone is generated within the conductor, the quench may propagate causing temperature and resistive voltage rise along the coil. The resulting thermal gradients can potentially cause new peak …

Weiwei Luo, Margherita Boselli, Jean-Marie Poumirol, Ivan Ardizzone, Jérémie Teyssier, Dirk Van Der Marel, Stefano Gariglio, Jean-Marc Triscone and Alexey Kuzmenko

Nature Communications 10 2774 (2019)

Probing the local transport properties of two-dimensional electron systems (2DES) confined at buried interfaces requires a non-invasive technique with a high spatial resolution operating in a broad temperature range. In this paper, we investigate the scattering-type scanning near field optical…

Thibault Sohier, Evgeniy Ponomarev, Marco Gibertini, Helmuth Berger, Nicola Marzari, Nicolas Ubrig and Alberto Morpurgo

Physical Review X 9 3, 031019 (2019)

We report a combined experimental and theoretical investigation that reveals a new mechanism responsible for the enhancement of electron-phonon coupling in doped semiconductors in which multiple inequivalent valleys are simultaneously populated. Using Raman spectroscopy on ionic-liquid-gated…

Karthik I. Seetharam, Charles Bardyn, Netanel H. Lindner, Mark S. Rudner and Gil Refael

Physical Review. B, Condensed Matter 99 1, 014307 (2019)

Floquet engineering offers tantalizing opportunities for controlling the dynamics of quantum many-body systems and realizing new nonequilibrium phases of matter. However, this approach faces a major challenge: generic interacting Floquet systems absorb energy from the drive, leading to uncontrolled …

Kouki Nakata, Se Kwon Kim and Shintaro Takayoshi

Physical Review. B, Condensed Matter 100 1, 014421 (2019)

We study the laser control of magnon topological phases induced by the Aharonov-Casher effect in insulating antiferromagnets (AFs). Since the laser electric field can be considered as a time-periodic perturbation, we apply the Floquet theory and perform the inverse frequency expansion by focusing…

Suman Mondal, Sebastian Greschner and Tapan Mishra

Physical Review. A 100 1, 013627 (2019)

We analyze the ground-state properties of three-body constrained bosons in a one-dimensional optical lattice with staggered hoppings analogous to the double-well optical lattice. By considering attractive and repulsive on-site interactions between the bosons, we obtain the phase diagram which…

Sebastian Greschner, Michele Filippone and Thierry Giamarchi

Physical Review Letters 122 8, 083402 (2019)

We theoretically study the Hall effect on interacting M-leg ladder systems, comparing different measures and properties of the zero temperature Hall response in the limit of weak magnetic fields. Focusing on SU(M) symmetric interacting bosons and fermions, as relevant for, e.g., typical synthetic…

Evgeniy Ponomarev

Thèse (2019)

The isolation of single-atom-thick layer of graphite, very well known now as graphene, done by A.Geim and K.Novoselov (Nobel prize in physics 2010) in 2004 was a truly revolutionary breakthrough which opened up a new field of research and had a pronounced impact on multiple domains ranging from…

Hugo Meley

Thèse (2019)

Le groupe Triscone, affilié au département de la matière quantique de l’Université de Genève, est expert dans la synthèse et la caractérisation de films minces à base d’oxyde, il travaille en collaboration étroite avec d’autres groupes de recherche spécialisés dans les techniques de…

Marco Gibertini, M. Koperski, Alberto Morpurgo and K. S. Novoselov

Nature nanotechnology 14 5, 408-419 (2019)

Zhe Wang, Marco Gibertini, Dumitru Dumcenco, Takashi Taniguchi, Kenji Watanabe, Enrico Giannini and Alberto Morpurgo

Nature nanotechnology 14 12, 1116-1122 (2019)

Dirk Van Der Marel, Francesco Barantani and Willem Rischau

Physical Review Research 1 013003 (2019)

The soft ferroelectric phonon in SrTiO3observed with optical spectroscopy has an extraordinarily strongspectral weight which is much stronger than expected in the limit of a perfectly ionic compound. This “chargedphonon” effect in SrTiO3is caused by the close-to-covalent character of the Ti-O…

Nicole M Cancelliere, Mehdi Najafi, Olivier Brina, Pierre Bouillot, Maria Isabel Vargas Gomez, Karl-Olof Lövblad, Timo Krings, Vitor M Pereira and David A Steinman

Journal of NeuroInterventional Surgery 015389 (2019)

Computational fluid dynamics (CFD) can provide valuable information regarding intracranial hemodynamics. Patient-specific models can be segmented from various imaging modalities, which may influence the geometric output and thus hemodynamic results. This study aims to compare CFD results from…

D. Afanasiev, A. Gatilova, D. J. Groenendijk, B. A. Ivanov, Marta Gibert Gutierrez, Stefano Gariglio, J. Mentink, J. Li, N. Dasari, M. Eckstein, Th. Rasing, Andrea Caviglia and A. V. Kimel

Physical Review X 9 021020 (2019)

Ultrafast photodoping of the Mott insulators, possessing strong correlation between electronic and magnetic degrees of freedom, holds promise for launching an ultrafast dynamics of spins which cannot be described in terms of conventional models of ultrafast magnetism. Here we study the ultrafast…

Ievgeniia O. Nedoliuk, Sheng Hu, Andre K. Geim and Alexey Kuzmenko

Nature Nanotechnology 14 8, 756-761 (2019)

When two-dimensional electron gases (2DEGs) are exposed to a magnetic field, they resonantly absorb electromagnetic radiation via electronic transitions between Landau levels1. In 2DEGs with a Dirac spectrum, such as graphene, theory predicts an exceptionally high infrared magneto-absorption, even…

Christian Weymann

Thèse (2019)

Dans cette thèse, nous présentons une méthode fiable pour produire des séries d’échantillons ferroélectriques identiques en tous points, sauf la structure de domaines intrinsèque: en changeant la température de croissance de nos échantillons, nous contrôlons entièrement la direction de…

Bernd Seeber, Ciro Calzolaio, Damien Zurmuehle, Vital Christof Abacherli, M. Alessandrini, G. De Marzi and Carmine Senatore

Journal of Applied Physics 126 203905 (2019)

Strain plays an important role in Nb3Sn multifilamentary wires because critical current depends on it and strain sensitivity of Ic increases at higher magnetic fields. In this paper, a three-dimensional strain data set becomes available by further analysis of an earlier study of the Nb3Sn lattice…

Daniel Schoerling, Diego Arbelaez, Bernhard Auchmann, Marta Bajko, Amalia Ballarino, Emanuela Barzi, Giovanni Bellomo, Michael Benedikt, Susana Izquierdo Bermudez, Bernardo Bordini, Luca Bottura, Lucas Brouwer, Pierluigi Bruzzone, Barbara Caiffi, Shlomo Caspi, Ananda Chakraborti, Eric Coatanea, Gijs DeRijk, Marc Dhalle, Maria Durante, Pasquale Fabbricatore, Stefania Farinon, Helene Felice, Alejandro Fernandez, Inigo Sancho Fernandez, Peng Gao, Barbara Gold, Thodoris Gortsas, Steve Gourlay, Mariusz Juchno, Vadim Kashikhin, Charilaos Kokkinos, Sotiris Kokkinos, Kari Koskinen, Friedrich Lackner, Clement Lorin, Konstantinos Loukas, Alexandre Louzguiti, Kari Lyytikainen, Samuele Mariotto, Maxim Marchevsky, Giuseppe Montenero, Javier Munilla, Igor Novitski, Toru Ogitsu and Carmine Senatore

IEEE Transactions on Applied Superconductivity 29 4003109 (2019)

A future circular collider (FCC) with a center-of-mass energy of 100 TeV and a circumference of around 100 km, or an energy upgrade of the LHC (HE-LHC) to 27 TeV require bending magnets providing 16 T in a 50-mm aperture. Several development programs for these magnets, based on Nb 3 Sn technology,…

S. Schael, A. Atanasyan, J. Berdugo, T. Bretz, M. Czupalla, B. Dachwald, P. von Doetinchem, M. Duranti, H. Gast, W. Karpinski, T. Kirn, K. Lübelsmeyer, C. Maña, P.S. Marrocchesi, P. Mertsch, I.V. Moskalenko, T. Schervan, M. Schluse, K.-U. Schröder, A. Schultz von Dratzig, Carmine Senatore, L. Spies, S.P. Wakely, M. Wlochal, Davide Uglietti and J. Zimmermann

Nuclear Instruments and Methods in Physics Research. A 944 162561 (2019)

The next generation magnetic spectrometer in space, AMS-100, is designed to have a geometrical acceptance of 100 m 2 sr and to be operated for at least ten years at the Sun–Earth Lagrange Point 2. Compared to existing experiments, it will improve the sensitivity for the observation of new…

P Kováč, Marco Bonura, S Santra, L Kopera, A Rosová, Carmine Senatore and I Hušek

Superconductor Science and Technology 32 115007 (2019)

This paper presents a study of the thermal transport properties of extra-light MgB2/Ti/Al + Al2O3 composite wires. The longitudinal thermal conductivity has been investigated as a function of temperature and magnetic field on wires differing only by an outer Al + Al2O3 sheath. The correlation…

Flavio Yair Bruno, Siobhan Mckeown Walker, Sara Ricco, Alberto De La Torre, Zhiming Wang, Anna Tamai, Timur K. Kim, Moritz Hoesch, Mohammad S. Bahramy and Felix Baumberger

Advanced Electronic Materials 5 1800860, 1-7 (2019)

2D electron gases (2DEGs) in oxides show great potential for the discovery of new physical phenomena and at the same time hold promise for electronic applications. In this work, angle-resolved photoemission is used to determine the electronic structure of a 2DEG stabilized in the (111)-oriented…

Fabrizio Murgia, Matteo Brighi and Radovan Cerny

Electrochemistry Communications 106 106534, 1-6 (2019)

All-solid-state sodium batteries are potentially game-changer devices in the transition towards a fossil-fuel-free society. They combine better sustainability, switching from lithium, to the largely available sodium with enhanced safety, replacing the flammable liquid electrolyte by a more…

Sungmin Kwon, M. Jeong, M. Kubus, Björn Wehinger, K. W. Krämer, Christian Ruegg, H. M. Rønnow and Soonchil Lee

Physical Review. B, Condensed Matter 99 214403 (2019)

We measured NMR and magnetic susceptibility for the quasi-two-dimensional, weakly XY-like, spin-1/2 square-lattice Heisenberg antiferromagnet [CuCl(pyz)₂]BF₄ (pyz = pyrazine = N₂C_{4H4) near the critical temperature. The Néel temperature…}

Christian Barth, P Komorowski, P Vonlanthen, R Herzog, R Tediosi, M Alessandrini, Marco Bonura and Carmine Senatore

Superconductor Science and Technology 32 7, 075005 (2019)

High temperature superconductors, especially rare-earth barium copper oxide (REBa₂Cu₃O₇₋ₓ or REBCO) tapes are an enabling technology for magnetic fields beyond 23.5 T, the limit of the existing technology based on the low temperature superconductors (LTS) niobium–titanium (NbTi) and…

Pierre Bouillot, Olivier Brina, Christophe Chnafa, Nicole M Cancelliere, Maria Isabel Vargas Gomez, Ivan Radovanovic, Timo Krings, David A Steinman and Vitor M Pereira

Medical Physics 46 5, 2126-2136 (2019)

Blood velocity and flow rate information may be helpful for a wide variety of applications, but it often requires separate acquisitions. The dynamic information combined with the high spatial resolution of 4D-CTA offers the possibility to quantify blood flow simultaneous to vascular anatomy.

Emilie Yvonne Jeanne Didelot, Yolanda Sadikin, Zbigniew Łodziana and Radovan Cerny

Solid State Sciences 90, 86-94 (2019)

Magnesium and 3d transition metals closo-dodecaborates were prepared by mechanosynthesis (ball milling) of the mixtures Na2B12H12 + MCl2 (M=Ti, Cr, Mn, Fe, Co, Cu, Zn, Mg) and CuCl, followed by hydration and drying under dynamic vacuum. The crystal structures of hydrated and anhydrous…

Marco Bonura, Christian Barth and Carmine Senatore

IEEE Transactions on Applied Superconductivity 29 6400205 (2019)

The improved mechanical properties of the Ni-alloy reinforced Bi2-xPbxSr2Ca2Cu3O10-x(Bi-2223) – released on 2016 by the Sumitomo Electric Industries, Osaka, Japan , (HT-NX type) – renewed the interest on this material for high-field applications. Whether Bi-2223 can be preferred to other…

Marco Bonura, Christian Barth, Anthony Joudrier, Jose Ferradas Troitino, Alexandre Fete and Carmine Senatore

IEEE Transactions on Applied Superconductivity 29 5 (2019)

No-insulation and partial-insulation are novel approaches for compact, high field rare-earth-Ba2Cu3O7-x-coated conductor magnets. They maximize the current density and overcome some of the coated conductors’ intrinsic challenges such as the low normal zone propagation velocity and the resulting…