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Ultrafast dynamical Lifshitz transition

MPG-Autoren

Beaulieu,  S.
Fritz Haber Institute of the Max Planck Society;

Dong,  S.
Fritz Haber Institute of the Max Planck Society;

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Tancogne-Dejean,  N.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Dendzik,  M.
Fritz Haber Institute of the Max Planck Society;
Department of Applied Physics, KTH Royal Institute of Technology;

Pincelli,  T.
Fritz Haber Institute of the Max Planck Society;

Maklar,  J.
Fritz Haber Institute of the Max Planck Society;

Xian,  R. P.
Fritz Haber Institute of the Max Planck Society;

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Sentef,  M. A.
Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

Wolf,  M.
Fritz Haber Institute of the Max Planck Society;

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Rubio,  A.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Computational Quantum Physics (CCQ), Flatiron Institute;

Rettig,  L.
Fritz Haber Institute of the Max Planck Society;

Ernstorfer,  R.
Fritz Haber Institute of the Max Planck Society;

Externe Ressourcen

https://dx.doi.org/10.1126/sciadv.abd9275
(Verlagsversion)

https://arxiv.org/abs/2003.04059
(Preprint)

https://dx.doi.org/10.5281/zenodo.4632480
(Ergänzendes Material)

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Volltexte (frei zugänglich)

eabd9275.full-1.pdf
(Verlagsversion), 2MB

Ergänzendes Material (frei zugänglich)

abd9275_SM.pdf
(Ergänzendes Material), 2MB

Zitation

Beaulieu, S., Dong, S., Tancogne-Dejean, N., Dendzik, M., Pincelli, T., Maklar, J., et al. (2021). Ultrafast dynamical Lifshitz transition. Science Advances, 7(17): eabd9275. doi:10.1126/sciadv.abd9275.


Zitierlink: https://hdl.handle.net/21.11116/0000-0008-603B-A
Zusammenfassung
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 Td-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.