Publications

Recent highlights

Publications by year

2018

High-resolution photoemission on Sr2RuO4 reveals correlation-enhanced effective spin-orbit coupling and dominantly local self-energies
A. Tamai, M. Zingl, E. Rozbicki, E. Cappelli, S. Ricco, A. de la Torre, S. McKeown Walker, F. Y. Bruno, P.D.C. King, W. Meevasana, M. Shi, M. Radovic, N.C. Plumb, A.S. Gibbs, A.P. Mackenzie, C. Berthod, H. Strand, M. Kim, A. Georges, F. Baumberger
arXiv (2018)

Microfocus laser-ARPES on encapsulated mono-, bi-, and few-layer 1T’-WTe2
I. Cucchi, I. Gutiérrez-Lezama, E. Cappelli, S. McKeown Walker, F. Y. Bruno, G. Tenasini, L. Wang, N. Ubrig, C. Barreteau, E. Giannini, M. Gibertini, A. Tamai, A. F. Morpurgo, F. Baumberger
Nano Letters DOI: 10.1021/acs.nanolett.8b04534arXiv (2018)

Persistence of antiferromagnetic order upon La substitution in the 4d4 Mott insulator Ca2RuO4
D. Pincini, S. Boseggia, R. Perry, M.J. Gutmann, S. Riccò, L.S.I. Veiga, C.D. Dashwood, S.P. Collins, G. Nisbet, A.Bombardi, D.G. Porter, F. Baumberger, A.T. Boothroyd, D.F. McMorrow
Phys. Rev. B 98, 014429 (2018)arXiv (2018)

In-situ strain-tuning of the metal-insulator-transition of Ca2RuO4 in angle-resolved photoemission experiments
S. Riccò, M. Kim, A. Tamai, S. McKeown Walker, F. Y. Bruno, I. Cucchi, E. Cappelli, C. Besnard, T. K. Kim, P. Dudin, M. Hoesch, M. Gutmann, A. Georges, R. S. Perry, F. Baumberger
Nature Communications 9, 4535 (2018)arXiv (2018)

Mott transition and collective charge pinning in electron doped Sr2IrO4
K. Wang, N. Bachar, J. Teyssier, W. Luo, C. W. Rischau, G. Scheerer, A. de la Torre, R. S. Perry, F. Baumberger, D. van der Marel
Phys. Rev. B 98, 045107 (2018), arXiv (2018)

Observation of out-of-plane spin texture in a SrTiO3 (111) two-dimensional electron gas
Pan He, S. McKeown Walker, Steven S.-L. Zhang, F. Y. Bruno, M. S. Bahramy, Jongmin Lee, Rajagopalan Ramaswamy, Kaiming Cai, Olle Heinonen, Giovanni Vignale, F. Baumberger, Hyunsoo Yang
Phys. Rev. Lett. 120, 266802 (2018), arXiv (2018)

2017

Anisotropic exchange and spin-wave damping in pure and electron-doped Sr2IrO4
Davide Pincini, James G. Vale, Christian Donnerer, Alberto de la Torre, Emily C. Hunter, Robin Perry, Marco Moretti Sala, Felix Baumberger, Desmond F. McMorrow
Phys. Rev. B 96,075162 (2017),  arXiv:1703.09051

Poor electronic screening in lightly doped Mott insulators observed with scanning tunneling microscopy
Irene Battisti, Vitaliy Fedoseev, Koen M. Bastiaans, Alberto de la Torre, Robin S. Perry, Felix Baumberger, Milan P. Allan
Phys. Rev. B, 95, 235141, arXiv

Atomically precise lateral modulation of a two-dimensional electron liquid in anatase TiO2 thin films
Z. Wang, Z. Zhong, S. McKeown Walker, Z. Ristic, J.-Z. Ma, F.Y. Bruno, S. Ricco, G. Sangiovanni, G. Eres, N.C. Plumb, L. Patthey, M. Shi, J. Mesot, F. Baumberger, M. Radovic
Nano Letters (2017)arXiv

Universality of pseudogap and emergent order in lightly doped Mott insulators
Irene Battisti, Koen M. Bastiaans, Vitaly Fedoseev, Alberto de la Torre, Nikolaos Iliopoulos, Anna Tamai, Emily C. Hunter, Robin S. Perry, Jan Zaanen, Felix Baumberger, Milan P. Allan
Nature Physics 13, 21–25 ), arXiv

A facility for the analysis of the electronic structures of solids and their surfaces by synchrotron radiation photoelectron spectroscopy
M. Hoesch, T. K. Kim, P. Dudin, H. Wang, S. Scott, P. Harris, S. Patel, M. Matthews, D. Hawkins, S. G. Alcock, T. Richter, J. J. Mudd, M. Basham, L. Pratt, P. Leicester, E. C. Longhi, A. Tamai, F. Baumberger
Review of Scientific Instruments 88, 013106 (2017), arXiv

Electronic structure of buried LaNiO3 layers in (111)-oriented LaNiO3/LaMnO3 superlattices probed by soft x-ray ARPES
F. Y. Bruno, M. Gibert, S. McKeown Walker, O.E. Peil, A. de la Torre, S. Riccò, Z. Wang, S. Catalano, A. Tamai, F. Bisti, V. N. Strocov, J-M Triscone, F. Baumberger
APL Mater. 5, 016101 (2017)arXiv

2016

ARPES Studies of Two-Dimensional Electron Gases at Transition Metal Oxide Surfaces
S. McKeown Walker, F. Y. Bruno, F. Baumberger
Contributed chapter in book entitled “Spectroscopy of Transition Metal Oxide Interfaces” by Springer. Editors: C. Cancellieri and V.N. Strocov, arXiv

Observation of large topologically trivial Fermi arcs in the candidate type-II Weyl semimetal WTe2
F. Y. Bruno, A. Tamai, Q. S. Wu, I. Cucchi, C. Barreteau, A. de la Torre, S. McKeown Walker, S. Riccò, Z. Wang, T. K. Kim, M. Hoesch, M. Shi, N. C. Plumb, E. Giannini, A. A. Soluyanov, F. Baumberger
Phys. Rev. B 94, 121112(R) (2016)arXiv

Fermi arcs and their topological character in the candidate type-II Weyl semimetal MoTe2
A. Tamai, Q. S. Wu, I. Cucchi, F. Y. Bruno, S. Ricco, T.K. Kim, M. Hoesch, C. Barreteau, E. Giannini, C. Bernard, A. A. Soluyanov, F. Baumberger
Phys. Rev. X 6, 031021 (2016)arXiv
See Synopsis in Physics: World of Weyl Craft

Absence of Giant Spin Splitting in the Two-Dimensional Electron Liquid at the Surface of SrTiO3(001)
S. McKeown Walker, S Riccò, F. Y. Bruno, A. de la Torre, A. Tamai, E. Golias, A. Varykhalov, D. Marchenko, M. Hoesch, M. S. Bahramy, P. D. C. King, J. Sánchez-Barriga, and F. Baumberger
Phys. Rev. B 93, 245143 (2016)arXiv

Tailoring the nature and strength of electron-phonon interactions in the SrTiO3 (001) two-dimensional electron liquid
Z. Wang, S. McKeown Walker, A. Tamai, Y. Wang, Z. Ristic, F.Y. Bruno, A. de la Torre, S. Ricco, N.C. Plumb, M. Shi, P. Hlawenka, J. Sanchez-Barriga, A. Varykhalov, T.K. Kim, M. Hoesch, P.D.C. King, W. Meevasana, U. Diebold, J. Mesot, B. Moritz, T.P. Devereaux, M. Radovic, and F. Baumberger
Nature Materials 15, 835 (2016), arXiv

2015

Collapse of the Mott gap and emergence of a nodal liquid in lightly doped Sr2IrO4
A. de la Torre, S. McKeown Walker, F. Y. Bruno, S. Ricco, Z. Wang, I. Gutierrez Lezama, G. Scheerer, G. Giriat, D. Jaccard, C. Berthod, T. K. Kim, M. Hoesch, E. C. Hunter, R. S. Perry, A. Tamai, and F. Baumberger
Phys. Rev. Lett. 115, 176402 (2015)

Carrier Density Control of the SrTiO3 (001) surface 2DEG studied by ARPES
S. McKeown Walker, F. Y. Bruno, Z. Wang, A. de la Torre, S. Ricco, A. Tamai, T. K. Kim, M. Hoesch, M. Shi, M. S. Bahramy, P. D. C. King and F. Baumberger
Advanced Materials 27, 3894 (2015)

2014

Coherent quasiparticles with a small Fermi surface in lightly doped Sr3Ir2O7
A. de la Torre, E. C. Hunter, A. Subedi, S. McKeown Walker, A. Tamai, T. K. Kim, M. Hoesch, R. S. Perry, A. Georges, and F. Baumberger
Phys. Rev. Lett. 113, 256402 (2014)

Control of a two-dimensional electron gas on SrTiO3(111) by atomic oxygen
S. McKeown Walker, A. de la Torre, F. Y. Bruno, A. Tamai, T. K. Kim, M. Hoesch, M. Shi, M. S. Bahramy, P. D. C. King, F. Baumberger
Phys. Rev. Lett. 113, 177601 (2014)

Electronic Structure of a Quasi-Freestanding MoS2 Monolayer
T. Eknapakul, P. D. C. King, M. Asakawa, P. Buaphet, R.-H. He, S.-K. Mo, H. Takagi, K. M. Shen, F. Baumberger, T. Sasagawa, S. Jungthawan and W. Meevasana
Nano Letters 14, 1312 (2014)

Quasiparticle dynamics and spin-orbital texture of the SrTiO3 two-dimensional electron gas
P.D.C. King, S. McKeown Walker, A. Tamai, A. de la Torre, T. Eknapakul, P. Buaphet, S.-K. Mo, W. Meevasana, M.S. Bahramy, F. Baumberger
Nature Communications 5, 3414 (2014)

2013

Spectroscopic evidence for polaronic behaviour of the strong spin-orbit insulator Sr3Ir2O7
P. D. C. King, T. Takayama, A. Tamai, E. Rozbicki, S. McKeown Walker, M. Shi, L. Patthey, R. G. Moore, D. Lu, K. M. Shen, H. Takagi, F. Baumberger
Phys. Rev. B 87, 241106(R) (2013)

Formation and consequences of heavy d-electron quasiparticles in Sr3Ru2O7
M. P. Allan, A. Tamai, E. Rozbicki, M. H. Fischer, J. Voss, P. D. C. King, W. Meevasana, S. Thirupathaiah, E. Rienks, J. Fink, A. Tennant, R. S. Perry, J. F. Mercure, M. A. Wang, C. J. Fennie, E.-A. Kim, M. J. Lawler, K. M. Shen, A. P. Mackenzie, Z.-X. Shen, F. Baumberger
New Journal of Physics,15 063029 (2013)

Spin-orbit splitting of the Shockley surface state on Cu(111)
A. Tamai, W. Meevasana, P. D. C. King, C. W. Nicholson, A. de la Torre, E. Rozbicki, and F. Baumberger
Phys. Rev. B 87, 075113 (2013)

2012

Emergent quantum confinement at topological insulator surfaces
M. S. Bahramy, P. D. C. King, A. de la Torre, J. Chang, M. Shi, L. Patthey, G. Balakrishnan, Ph. Hofmann, R. Arita, N. Nagaosa, F. Baumberger
Nature Communications 3, 1159 (2012)

Subband Structure of a Two-Dimensional Electron Gas Formed at the Polar Surface of the Strong Spin-Orbit Perovskite KTaO3
P. D. C. King, R. H. He, T. Eknapakul, P. Buaphet, S.-K. Mo, Y. Kaneko, S. Harashima, Y. Hikit, M. S. Bahramy, C. Bell, Z. Hussain, Y. Tokura, Z.-X. Shen, H. Y. Hwang, F. Baumberger, and W. Meevasana
Physical Review Letters 108, 117602 (2012)

Controlling Bulk Conductivity in Topological Insulators: Key Role of Anti-Site Defects
D. O. Scanlon, P. D. C. King, R. P. Singh, A. de la Torre, S. McKeown Walker, G. Balakrishnan, F. Baumberger, C. R. A. Catlow
Advanced Materials doi: 10.1002/adma.201200187 (2012)

2011

Large tuneable Rashba spin splitting of a two-dimensional electron gas in Bi2Se3
P.D.C. King, R.C. Hatch, M. Bianchi, R. Ovsyannikov, C. Lupulescu, G. Landolt, B. Slomski, J.H. Dil, D. Guan, J.L. Mi, E.D.L. Rienks, J. Fink, A. Lindblad, S. Svensson, S. Bao, G. Balakrishnan, B.B. Iversen, J. Osterwalder, W. Eberhardt, F. Baumberger, Ph. Hofmann
Physical Review Letters 107, 096801 (2011)

Structural origin of apparent Fermi surface pockets in angle-resolved photoemission of Bi2Sr(2-x)LaxCuO(6+d)
P.D.C. King, J.A. Rosen, W. Meevasana, A. Tamai, E. Rozbicki, R. Comin, G. Levy, D. Fournier, Y. Yoshida, H. Eisaki, K.M. Shen, N.J.C. Ingle, A. Damascelli, and F. Baumberger
Physical Review Letters 106, 127005 (2011)

Creation and control of a two-dimensional electron liquid at the bare SrTiO3 surface
W. Meevasana, P.D.C. King, R.H. He, S.-K. Mo, M. Hashimoto, A. Tamai, P. Songsiriritthigul, F. Baumberger, Z.-X. Shen
Nature Materials 10, 114 (2011)

2010

Strong Electron Correlations in the Normal State of the Iron-Based FeSe0.42Te0.58 Superconductor Observed by Angle-Resolved Photoemission Spectroscopy
A. Tamai, A.Y. Ganin, E. Rozbicki, J. Bacsa, W. Meevasana, P.D.C. King, M. Caffio, R. Schaub, S. Margadonna, K. Prassides, M.J. Rosseinsky, and F. Baumberger
Physical Review Letters, 104, 097002 (2010)

Strong energy–momentum dispersion of phonon-dressed carriers in the lightly doped band insulator SrTiO3
W. Meevasana, X.J. Zhou, B. Moritz, C-C Chen, R.H. He, S-I Fujimori, D.H. Lu, S-K Mo, R.G. Moore, F. Baumberger, T.P. Devereaux, D. van der Marel, N. Nagaosa, J. Zaanen and Z-X Shen
New Journal of Physics 02, 023004 (2010)

LUMO photoemission lineshape in quasi-one-dimensional C60 chains
A. Tamai, F. Baumberger, M. Hengsberger, J. Lobo-Checa, M. Muntiwiler, M. Corso, C. Cirelli, L. Patthey, Z.-X. Shen, T. Greber, and J. Osterwalder
Phyical Review B 81, 045423 (2010)

2000 to 2009

Heavy d-electron quasiparticle interference and real-space electronic structure of Sr3Ru2O7
Jinho Lee, M. P. Allan, M. A. Wang, J. Farrell, S. A. Grigera, F. Baumberger, J. C. Davis and A. P. Mackenzie
Nature Physics, 5, 800 (2009)

Fermi Surface and van Hove singularities in the itinerant metamagnet Sr3Ru2O7
A. Tamai, M.P. Allan, J.F. Mercure, W. Meewasana, R. Dunkel, D.H. Lu, R.S. Perry, A.P. Mackenzie, D.J. Singh, Z.-X Shen, and F. Baumberger
Physical Review Letters, 101, 026407 (2008)

Extracting the spectral function of the cuprates by a full two-dimensional analysis: Angle-resolved photoemission spectra of Bi2Sr2CuO6
W. Meewasana, F. Baumberger, K. Tanaka, F. Schmitt, W.R. Dunkel, D.H. Lu, S.-K. Mo, H. Eisaki, amd Z.-X. Shen
Physical Review B 77, 104506 (2008)

Electronic structure at the C60/metal interface: An angle-resolved and first-principles study
A. Tamai, A.P. Seitsonen, F. Baumberger, M. Hengsberger, Z.-X. Shen, T. Greber, and J. Osterwalder
Physical Review B 77, 075134 (2008)

Photoemission momentum mapping and wave function analysis of surface and bulk states on flat Cu(111) and stepped Cu(443) surfaces: A two-photon photoemission study
M. Hengsberger, F. Baumberger, H.F. Neff, T. Greber, and J. Osterwalder
Physical Review B 77, 085425 (2008)

Evolution of the Fermi Surface and Quasiparticle Renormalization through a van Hove Singularity in Sr2-yLayRuO4
K.M. Shen, N. Kikugawa, C. Bergemann, L. Balicas, F. Baumberger, W. Meevasana, N.J.C. Ingle, Y. Maeno, Z.-X. Shen, and A.P. Mackenzie
Physical Review Letters, 99, 187001 (2007)

Electronic band structure and Kondo coupling in YbRh2Si2
G. A. Wigger, F. Baumberger, Z.-X. Shen, Z. P. Yin, W. E. Pickett, S. Maquilon, and Z. Fisk
Physical Review B 75, 035106 (2007)

Angle-resolved photoemission studies of lattice polaron formation in the cuprate Ca2CuO2Cl2
K. M. Shen, F. Ronning, W. Meevasana, D. H. Lu, N. J. C. Ingle, F. Baumberger, W. S. Lee, L. L. Miller, Y. Kohsaka, M. Azuma, M. Takano, H. Takagi, and Z.-X. Shen
Physical Review B 75, 075115 (2007)

Sr2RhO4: a new, clean correlated electron metal
R.S. Perry, F. Baumberger, L. Balicas, N. Kikugawa, N.J.C. Ingle, A. Rost, J.F. Mercure, Y. Maeno, Z.-X. Shen, and A.P. Mackenzie
New Journal of Physics 8, 175 (2006)

Fermi Surface and Quasiparticle Excitations in Sr2RhO4
F. Baumberger, N.J.C. Ingle, W. Meevasana, K.M. Shen, D.H. Lu, R.S. Perry, A.P. Mackenzie, Z. Hussain, D.J. Singh, and Z.-X. Shen
Physical Review Letters 96, 246402 (2006)

Doping dependence of the coupling of electrons to bosonic modes in the single layer high-temperature Bi2Sr2CuO6 superconductor
W. Meevasana, N.J.C. Ingle, D.H. Lu, J.R. Shi, F. Baumberger, K.M. Shen, W.S. Lee, T. Cuk, H. Eisaki, T.P. Deveraux, N. Nagaosa, J. Zaanen, and Z.-X. Shen
Physical Review Letters 96, 157003 (2006)

Nested Fermi Surface and Electronic Instability in Ca3Ru2O7
F. Baumberger, N.J.C. Ingle, N. Kikugawa, M.A. Hossain, W. Meevasana, R.S. Perry, K.M. Shen, D.H. Lu, A. Damascelli, A. Rost, A.P. Mackenzie, Z. Hussain, and Z.-X. Shen
Physical Review Letters 96, 107601 (2006)

Nodal Quasiparticles and Antinodal Charge Ordering in Ca2-xNaxCuO2Cl2
K.M. Shen, F. Ronning, D.H. Lu, F. Baumberger, N.J.C. Ingle, W.S. Lee, W. Meevasana, Y. Kohsaka, M. Azuma, M. Takano, H. Takagi, and Z.-X. Shen
Science 307, 901 (2005)

Quantitative Analysis of Sr2RuO4 angle-resolved photoemission spectra: Many-body interactions in a model Fermi liquid
N.J.C. Ingle, K.M. Shen, F. Baumberger, W. Meevasana, D.H. Lu, Z.-X. Shen, A. Damascelli, S. Nakatsuji, Z.Q. Mao, Y. Maeno T. Kimura, Y. Tokura
Physical Review B 72, 205114 (2005)

Electron Coherence in a Melting Lead Monolayer
F. Baumberger, W. Auwärter, T. Greber, and J. Osterwalder
Science 306, 2221 (2004)

Missing Quasiparticles and the Chemical Potential Puzzle in the Doping Evolution of the Cuprates
K.M. Shen, F. Ronning, D.H. Lu, W.S. Lee, N.J.C. Ingle, W. Meevasana, F. Baumberger, A. Damascelli, N.P. Armitage, L.L. Miller, Y. Kohsaka, M. Azuma, M. Takano, H. Takagi, and Z.-X. Shen
Physical Review Letters 93, 267002 (2004)

One-dimensional chains of C60 molecules on Cu(221)
A. Tamai, W. Auwärter, C. Cepek, F. Baumberger, T. Greber, and J. Osterwalder
Surface Science 566-568, 633 (2004)

Coupling of the B1g Phonon to the Antinodal Electronic States of Bi2Sr2Ca0.92Y0.08O8+x
T. Cuk, F. Baumberger, D.H. Lu, N. Ingle, X.J. Zhou, H. Eisaki, N. Kaneko, Z. Hussain, T.P. Devereaux, N. Nagaosa, and Z.-X. Shen
Physical Review Letters 93, 117003 (2004)

Localization of Surface States in Disordered Step Lattices
F. Baumberger, M. Hengsberger, M. Muntwiler, M. Shi, J. Krempasky, L. Patthey, J. Osterwalder, and T. Greber
Physical Review Letters 92, 196805 (2004)

Step lattice induced band gap opening at the Fermi level
F. Baumberger, M. Hengsberger, M. Muntwiler, M. Shi, J. Krempasky, L. Patthey, J. Osterwalder, and T. Greber
Physical Review Letters 92, 016803 (2004)

Reinvestigation of the band structure of the Si(111)5 x 2-Au surface
I. Matsuda, M. Hengsberger, F. Baumberger, T. Greber, H.-W, Yeom, and J. Osterwalder
Physical Review B 68, 195319 (2003)

Optical recognition of atomic steps on surfaces
F. Baumberger, Th. Herrmann, A. Kara, S. Stolbov, N. Esser, T.S. Rahman, J. Osterwalder, W. Richter, and T. Greber
Physical Review Letters 90, 177402 (2003)

The electronic structure of a surfactant layer: Pb/Cu(111)
F. Baumberger, A. Tamai, M. Muntwiler, T. Greber, and J. Osterwalder
Surface Science 532-535, 82 (2003)

Tailoring confining barriers for surface states by step decoration: CO/vicinal Cu(111)
F. Baumberger, T. Greber, B. Delley, and J. Osterwalder
Physical Review Letters 88, 237601 (2002)

High-resolution photoemission study of the discommensurate (5.55 x 5.55) Cu/Si(111) surface layer
H.-J. Neff, I. Matsuda, M. Hengsberger, F. Baumberger, T. Greber, and J. Osterwalder
Physical Review B 64, 235415 (2001)

Binding and ordering of C60 on Pd(110): Investigations at the local and mesoscopic scale
J. Weckesser, C. Cepek, R. Fasel, J.V. Barth, F. Baumberger, T. Greber, K. Kern
Journal of Chemical Physics 115, 9001 (2001)

Fermi surfaces of the two-dimensional surface states on vicinal Cu(111)
F. Baumberger, T. Greber, and J. Osterwalder
Physical Review B 64, 195411 (2001)

Orientation of chiral heptahelicene C30H18 on copper surfaces: An x-ray photoelectron diffraction study
R. Fasel, A. Cossy, K.H. Ernst, F. Baumberger, T. Greber, J. Osterwalder
Journal of Chemical Physics 115, 1020 (2001)

Atomically Resolved Images from Near Node Photoelectron Holography Experiments on Al(111)
J. Wider, F. Baumberger, M. Sambi, R. Gotter, A. Verdini, F. Bruno, D. Cvetko, A. Morgante, T. Greber, and J. Osterwalder
Physical Review Letters 86, 2337 (2001)

Determining adsorbate structures from substrate emission X-ray photoelectron diffraction
M. Muntwiler, Auwärter, F. Baumberger, M. Hoesch, T. Greber, and J. Osterwalder
Surface Science 472, 125 (2001)

Step-induced one-dimensional surface state on Cu(332)
F. Baumberger, T. Greber, and J. Osterwalder
Physical Review B 62, 15431 (2000)

PhD theses

Spectroscopic studies of layered iridium oxides
Alberto de la Torre, December 2015

Two Dimensional Electron Liquids at Oxide Surfaces Studied by Angle Resolved Photoemission Spectroscopy
Siobhan Mckeown Walker, June 2016

Master theses

Laser ARPES investigation of the semi-metallic transition metal dichalcogenides WTe2 and MoTe2
Irène Cucchi, July 2016

Réalisation : Sur Mesure concept