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Publications

Our Publications

Non-Fermi liquid quasiparticles in strain-tuned Sr2RuO4
Andrew Scott Hunter, C. Putzke, F. B. Kugler, S. Beck, Edoardo Cappelli, Florian Margot, Michael Straub, Yann Alexanian, Jérémie Teyssier, A. de la Torre, K. W. Plumb, M. D. Watson, T. K. Kim, C. Cacho, N. C. Plumb, M. Shi, M. Radovic, J. Osiecki, C. Polley, D. A. Sokolov, A. P. Mackenzie, E. Berg, Antoine Georges, P. J. W. Moll, Anna Tamai and Felix Baumberger

Preprint (2025)

Interacting electrons can form metallic states beyond the Fermi liquid paradigm, a conceptual frontier of many-body physics mainly explored via bulk thermodynamics and transport. In contrast, the microscopics of anomalous single-particle excitations underlying non-Fermi liquid properties have…

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Nano-ARPES study of moiré systems and Td-MoTe2: from flat bands to electron-phonon coupling
Julia Issing

Thèse (2024)

Thinning a bulk material down to a few atomic layers or even to a monolayer influences its physical properties considerably. Such two-dimensional materials can also be used to engineer new correlated phases by stacking them on top of each other. In the present thesis, I present my work on twisted…

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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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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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Nature of metallic and insulating domains in the CDW system 1T-TaSe2
Michael Straub, Francesco Petocchi, Catherine Witteveen, F. B. Kugler, Andrew Scott Hunter, Yann Alexanian, Gianmarco Gatti, Salony Mandloi, C. Polley, G. Carbone, J. Osiecki, Fabian von Rohr, Antoine Georges, Felix Baumberger and Anna Tamai

Preprint (2024)

We study the electronic structure of bulk 1T-TaSe$_2$ in the charge density wave phase at low temperature. Our spatially and angle resolved photoemission (ARPES) data show insulating areas coexisting with metallic regions characterized by a chiral Fermi surface and moderately correlated…

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Fermi surface and pseudogap in highly doped Sr2IrO4
Yann Alexanian, A. de la Torre, Siobhan Mckeown Walker, Michael Straub, Gianmarco Gatti, Andrew Scott Hunter, Salony Mandloi, Edoardo Cappelli, Sara Ricco, Flavio Yair Bruno, M. Radovic, N. C. Plumb, M. Shi, J. Osiecki, C. Polley, T. K. Kim, P. Dudin, M. Hoesch, R. S. Perry, Anna Tamai and Felix Baumberger

Preprint (2024)

The fate of the Fermi surface in bulk electron-doped Sr$_{2}$IrO$_{4}$ remains elusive, as does the origin and extension of its pseudogap phase. Here, we use high-resolution angle-resolved photoelectron spectroscopy (ARPES) to investigate the electronic structure of Sr$_{2-x}$La$_{x}$IrO$_{4}$ up…

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