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H-Induced local disorder in the structure of Ti2Ni-type Hf(Zr)4Fe2Ox compounds
I.Yu. Zavaliy, I.v. Koval'chuck, R.v. Denys, Radovan Cerny, V. Pecharsky and P. Zavalij

Journal of alloys and compounds 980, 173531 (2024)

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The effects of correlated disorder on static and dynamical properties of matter
Amirreza Hemmatzade

Thèse (2024)

Frustration can lead to a disordered ground state with a macroscopic degeneracy. A structural and/or magnetic ice system is one in which this frustration can be described by simple local rules describing the configuration of a tetrahedron – the so-called ice rule. In the case of water-ice this rule …

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Anomalous electrons in a metallic kagome ferromagnet
Sandy Adhitia Ekahana, Y. Soh, Anna Tamai, Daniel Gosálbez-Martínez, Mengyu Yao, Andrew Scott Hunter, Wenhui Fan, Yihao Wang, Junbo Li, Armin Kleibert, C. A. F. Vaz, Junzhang Ma, Yimin Xiong, Oleg V. Yazyev, Felix Baumberger, Ming Shi and Gabriel Aeppli

Nature 627, 67-72 (2024)

Ordinary metals contain electron liquids within well-defined ‘Fermi’ surfaces at which the electrons behave as if they were non-interacting. In the absence of transitions to entirely new phases such as insulators or superconductors, interactions between electrons induce scattering that is…

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Gap collapse and flat band induced by uniaxial strain in 1T − TaS2
C. W. Nicholson, F. Petocchi, B. Salzmann, Catherine Witteveen, M. Rumo, G. Kremer, O. Ivashko, Fabian von Rohr, P. Werner and C. Monney

Physical review. B 109 3, 035167 (2024)

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Influence of the heat treatment on the layer JC of internal-Sn Nb3Sn wires with internally oxidized nanoparticles
Francesco Lonardo, Gianmarco Bovone, Florin Buta, Marco Bonura, Tommaso Bagni, B. Medina-Clavijo, A. Ballarino, S. C. Hopkins, T. Boutboul and Carmine Senatore

IEEE transactions on applied superconductivity 34 5, 6000305 (2024)

We evaluated various heat treatments (HT) for maximizing the Nb 3 Sn layer thickness while retaining a refined grain microstructure in low filament count internal-Sn Nb 3 Sn Rod-In-Tube wires with internally oxidized nanoparticles. These wires were manufactured in our…

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Conceptual design of an HTS Canted Cosine Theta dipole magnet for research and hadron therapy accelerators
E. De Matteis, A. Ballarino, D. Barna, A. Carloni, A. Echeandia, G. Kirby, T. Lecrevisse, J. Lucas, S. Mariotto, J. van Nugteren, M. Prioli, L. Rossi, Carmine Senatore, M. Sorbi, S. Sorti, M. Statera, F. Toral and R.u. Valente

IEEE transactions on applied superconductivity 34 5, 4402505 (2024)

The European project IFAST’s WP8 Innovative Superconducting Magnets aims to develop the technology of Canted Cosine Theta (CCT) magnets wound with High-Temperature Superconductors (HTS). Superconducting magnets could lower the size and cost of synchrotrons and gantries for research and hadron…

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Estimation of Physical and Electrical Properties of Various REBCO Tapes for Construction of Very-High-Field REBCO Magnet
Jung-Bin Song, Xavier Chaud, François Debray, Kévin Paillot, Philippe Fazilleau, Thibault Lécrevisse, Thomas Herrmannsdörfer, Carmine Senatore, Marc Dhallé and Anis Smara

IEEE transactions on applied superconductivity 34 5 (2024)

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X-Ray Absorption Spectroscopy to investigate precipitated oxides in Nb 3 Sn wires with an internal oxygen source
Gianmarco Bovone, Florin Buta, Francesco Lonardo, Marco Bonura, C. N. Borca, T. Huthwelker, S.c. Hopkins, A. Ballarino, T. Boutboul and Carmine Senatore

IEEE transactions on applied superconductivity 34 3, 6000205 (2024)

Internal oxidation can achieve significantly enhanced Jc in Nb 3 Sn wires, but the mechanism of oxygen transport and oxide precipitation is not fully understood. Our investigation employs X-ray Absorption Near-Edge Structure (XANES) spectroscopy, revealing insights into the…

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Controlling crystal cleavage in Focused Ion Beam shaped specimens for surface spectroscopy
Andrew Scott Hunter, C. Putzke, Iaroslav Gaponenko, Anna Tamai, Felix Baumberger and P. J. W. Moll

Review of scientific instruments 95, 033905 (2024)

Our understanding of quantum materials is commonly based on precise determinations of their electronic spectrum by spectroscopic means, most notably angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy (STM). Both require atomically clean and flat crystal surfaces…

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Anomalous temperature dependence of phonon lifetimes in metallic VO2
Willem Rischau, Artem Korshunov, Volodymyr Multian, Sara Almudena Lopez Paz, Chubin Huang, Lucia Varbaro, Jérémie Teyssier, Yoav Kalcheim, Stefano Gariglio, Alexei Bosak, Jean-Marc Triscone and Javier del Valle

Physical review. B, Condensed matter 109, 094122 (2024)

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Phonon promoted charge density wave in topological kagome metal ScV6Sn6
Yong Hu, Junzhang Ma, Yinxiang Li, Yuxiao Jiang, Dariusz Jakub Gawryluk, Tianchen Hu, Jérémie Teyssier, Volodymyr Multian, Zhouyi Yin, Shuxiang Xu, Soohyeon Shin, Igor Plokhikh, Xinloong Han, Nicholas C. Plumb, Yang Liu, Jia-Xin Yin, Zurab Guguchia, Yue Zhao, Andreas P. Schnyder, Xianxin Wu, Ekaterina Pomjakushina, M. Zahid Hasan, Nanlin Wang and Ming Shi

Nature communications 15 1 (2024)

Charge density wave (CDW) orders in vanadium-based kagome metals have recently received tremendous attention, yet their origin remains a topic of debate. The discovery of ScV 6 Sn 6 , a bilayer kagome metal featuring an intriguing $$\sqrt{3}\times\sqrt{3}\times3$$ 3 × 3 × 3…

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Dual Second Harmonic Generation and Up-Conversion Photoluminescence Emission in Highly-Optimized LiNbO3 Nanocrystals Doped and Co-Doped with Er3+ and Yb3+
Kévin Bredillet, Florian Riporto, Tianhao Guo, Ameni Dhouib, Volodymyr Multian, Virginie Monnier, Paulí Figueras Llussà, Sandrine Beauquis, Luigi Bonacina, Yannick Mugnier and Ronan Le Dantec

Nanoscale (2024)

Preparation from the aqueous alkoxide route of doped and co-doped lithium niobate nanocrystals with Er 3+ and Yb 3+ ions, and detailed investigations of their optical properties are presented in this comprehensive…

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Structural study of nickelate based heterostructures
Lucia Varbaro, Bernat Mundet Bolos, Subhadeep Bandyopadhyay, Claribel Dominguez Ordonez, Jennifer Fowlie, Lukas Alexander Korosec, Chih-Ying Hsu, Duncan T. L. Alexander, Philippe Ghosez and Jean-Marc Triscone

APL materials 12 3, 031104 (2024)

Heterostructures consisting of SmNiO3 and NdNiO3 alternating layers with additional LaAlO3 spacer layers were grown and fully characterized by means of x-ray diffraction, atomic force microscopy, and scanning transmission electron microscopy. A change in the orientation of the orthorhombic…

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Switchable tribology of ferroelectrics
Seongwoo Cho, Iaroslav Gaponenko, Kumara Cordero-Edwards, Jordi Barceló-Mercader, Irene Arias, Daeho Kim, Céline Lichtensteiger, Jiwon Yeom, Loïc Musy, Hyunji Kim, Seung Min Han, Gustau Catalan, Patrycja Paruch and Seungbum Hong

Nature communications 15 387 (2024)

Switchable tribological properties of ferroelectrics offer an alternative route to visualize and control ferroelectric domains. Here, we observe the switchable friction and wear behavior of ferroelectrics using a nanoscale scanning probe—down domains have lower friction coefficients and show…

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Loss of memory of an elastic line on its way to limit cycles
Elisabeth Agoritsas and Jonathan Barés

Physical review. E 109 4, L042901 (2024)

Oscillatory-driven amorphous materials forget their initial configuration and converge to limit cycles. Here we investigate this memory loss under a nonquasistatic drive in a minimal model system, with quenched disorder and memory encoded in a spatial pattern, where oscillating protocols are…

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Observation of naturally canalized phonon polaritons in LiV2O5 thin layers
Ana I. F. Tresguerres-Mata, Christian Lanza, Javier Taboada Gutierrez, Joseph. R. Matson, Gonzalo Álvarez-Pérez, Masahiko Isobe, Aitana Tarazaga Martín-Luengo, Jiahua Duan, Stefan Partel, María Vélez, Javier Martín-Sánchez, Alexey Y. Nikitin, Joshua D. Caldwell and Pablo Alonso-González

Nature communications 15 1, 2696 (2024)

Polariton canalization is characterized by intrinsic collimation of energy flow along a single crystalline axis. This optical phenomenon has been experimentally demonstrated at the nanoscale by stacking and twisting van der Waals (vdW) layers of α-MoO3, by combining α-MoO3

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Type-II superconductivity in the Dirac semimetal PdTe2
Ritu Gupta, Catherine Witteveen, Debarchan Das, Fabian von Rohr and Rustem Khasanov

Physical review. B 109 13, 134507 (2024)

We report on the microscopic superconducting properties of the Dirac semimetal PdTe2. In this study, we have focused on mosaic crystals of PdTe2, and used detailed zero-field and transverse-field muon-spin relaxation/rotation (μSR), ac-magnetic susceptibility, and resistivity measurements to…

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New Phases in the Sc−Mn−Si and Sc−Mn−Al−Si Systems Through Molten Indium Flux Synthesis
Robin Lefèvre, Félix Eder and Fabian von Rohr

Helvetica Chimica Acta 107 4, e202400018 (2024)

Through the application of synthesis via molten indium flux, we have been able to expand the ternary Sc−Mn−Si system and the quaternary Sc−Mn−Al−Si system. Specifically, we report on five previously unknown chemical compounds, namely β-ScMnSi2, Sc4+xMn4Si7–2x, Sc2Mn4Si5, Sc2Mn3Si4, and …

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Delusive chirality and periodic strain pattern in moiré systems
Arpad Pasztor, Ishita Pushkarna and Christoph Renner

2D materials 11 3, 035017 (2024)

Geometric phase analysis (GPA) is a widely used technique for extracting displacement and strain fields from scanning probe images. Here, we demonstrate that GPA should be implemented with caution when several fundamental lattices contribute to the image, in particular in twisted heterostructures…

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