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Ultrafast dynamical Lifshitz transition.
Beaulieu, Samuel; Dong, Shuo; Tancogne-Dejean, Nicolas; Dendzik, Maciej; Pincelli, Tommaso; Maklar, Julian; Xian, R Patrick; Sentef, Michael A; Wolf, Martin; Rubio, Angel; Rettig, Laurenz; Ernstorfer, Ralph.
Afiliação
  • Beaulieu S; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, Berlin 14195, Germany. samuel.beaulieu@u-bordeaux.fr nicolas.tancogne-dejean@mpsd.mpg.de ernstorfer@fhi-berlin.mpg.de.
  • Dong S; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, Berlin 14195, Germany.
  • Tancogne-Dejean N; Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, Hamburg 22761, Germany. samuel.beaulieu@u-bordeaux.fr nicolas.tancogne-dejean@mpsd.mpg.de ernstorfer@fhi-berlin.mpg.de.
  • Dendzik M; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, Berlin 14195, Germany.
  • Pincelli T; Department of Applied Physics, KTH Royal Institute of Technology, Hannes Alfvéns väg 12, 114 19 Stockholm, Sweden.
  • Maklar J; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, Berlin 14195, Germany.
  • Xian RP; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, Berlin 14195, Germany.
  • Sentef MA; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, Berlin 14195, Germany.
  • Wolf M; Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, Hamburg 22761, Germany.
  • Rubio A; Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, Berlin 14195, Germany.
  • Rettig L; Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, Hamburg 22761, Germany.
  • Ernstorfer R; Center for Computational Quantum Physics (CCQ), Flatiron Institute, 162 Fifth Avenue, New York, NY 10010, USA.
Sci Adv ; 7(17)2021 Apr.
Article em En | MEDLINE | ID: mdl-33883128
ABSTRACT
Fermi surface is at the heart of our understanding of metals and strongly correlated many-body systems. An abrupt change in the Fermi surface topology, also called Lifshitz transition, can lead to the emergence of fascinating phenomena like colossal magnetoresistance and superconductivity. While Lifshitz transitions have been demonstrated for a broad range of materials by equilibrium tuning of macroscopic parameters such as strain, doping, pressure, and temperature, a nonequilibrium dynamical route toward ultrafast modification of the Fermi surface topology has not been experimentally demonstrated. Combining time-resolved multidimensional photoemission spectroscopy with state-of-the-art TDDFT+U simulations, we introduce a scheme for driving an ultrafast Lifshitz transition in the correlated type-II Weyl semimetal T d-MoTe2 We demonstrate that this nonequilibrium topological electronic transition finds its microscopic origin in the dynamical modification of the effective electronic correlations. These results shed light on a previously unexplored ultrafast scheme for controlling the Fermi surface topology in correlated quantum materials.

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article