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Journal Article

Ultrafast dynamical Lifshitz transition

MPS-Authors
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Beaulieu,  Samuel
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Dong,  Shuo
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

Tancogne-Dejean,  Nicolas
Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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Dendzik,  Maciej Ramon
Physical Chemistry, Fritz Haber Institute, Max Planck Society;
Department of Applied Physics, KTH Royal Institute of Technology;

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Pincelli,  Tommaso
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Maklar,  Julian
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Xian,  R. Patrick
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

Sentef,  Michael A.
Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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Wolf,  Martin
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

Rubio,  Angel
Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Computational Quantum Physics (CCQ), The Flatiron Institute;

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Rettig,  Laurenz
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Ernstorfer,  Ralph
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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2003.04059.pdf
(Preprint), 3MB

eabd9275.full.pdf
(Publisher version), 2MB

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Citation

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


Cite as: https://hdl.handle.net/21.11116/0000-0005-E414-3
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 and using different types of static external perturbations such as strain, doping, pressure and temperature, a non-equilibrium route toward ultrafast and transient 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 Weyl semimetal Td-MoTe2. We demonstrate that this non-equilibrium topological electronic transition finds its microscopic origin in the dynamical modification of the effective electronic correlations. These results shed light on a novel ultrafast and all-optical scheme for controlling the Fermi surface topology in correlated quantum materials.