Phonon-induced disorder in dynamics of optically pumped metals from nonlinear electron-phonon coupling

John Sous (), Benedikt Kloss, Dante M. Kennes, David R. Reichman () and Andrew J. Millis ()
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John Sous: Columbia University
Benedikt Kloss: Columbia University
Dante M. Kennes: RWTH Aachen
David R. Reichman: Columbia University
Andrew J. Millis: Columbia University

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract The non-equilibrium dynamics of matter excited by light may produce electronic phases, such as laser-induced high-transition-temperature superconductivity, that do not exist in equilibrium. Here we simulate the dynamics of a metal driven at initial time by a spatially uniform pump that excites dipole-active vibrational modes which couple nonlinearly to electrons. We provide evidence for rapid loss of spatial coherence, leading to emergent effective disorder in the dynamics, which arises in a system unitarily evolving under a translation-invariant Hamiltonian, and dominates the electronic behavior as the system evolves towards a correlated electron-phonon long-time state, possibly explaining why transient superconductivity is not observed. Our framework provides a basis within which to understand correlation dynamics in current pump-probe experiments of vibrationally coupled electrons, highlight the importance of the evolution of phase coherence, and demonstrate that pumped electron-phonon systems provide a means of realizing dynamically induced disorder in translation-invariant systems.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26030-3

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DOI: 10.1038/s41467-021-26030-3

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