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Title: Negative absolute conductivity in photoexcited metals

Abstract

We show that in a model of a metal photoexcited by a transient pump pulse resonant with a phonon mode, the absolute dc conductivity may become negative, depending on the interplay between the electronic structure, the phonon frequency, and the pump intensity. Here, the analysis includes the effects of inelastic scattering and thermal relaxation. Results for the time evolution of the negative conductivity state are presented; the associated nonequilibrium physics may persist for long times after the pulse. Our findings provide a theoretical justification for previously proposed phenomenology and indicate new routes to the generation and exploration of intrinsically nonequilibrium states.

Authors:
ORCiD logo [1];  [2];  [1]
  1. Columbia Univ., New York, NY (United States)
  2. Columbia Univ., New York, NY (United States); The Flatiron Inst., New York, NY (United States)
Publication Date:
Research Org.:
Columbia Univ., New York, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1582397
Grant/Contract Number:  
SC0018218
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 101; Journal Issue: 4; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Chiriacò, Giuliano, Millis, Andrew J., and Aleiner, Igor L. Negative absolute conductivity in photoexcited metals. United States: N. p., 2020. Web. doi:10.1103/PhysRevB.101.041105.
Chiriacò, Giuliano, Millis, Andrew J., & Aleiner, Igor L. Negative absolute conductivity in photoexcited metals. United States. doi:10.1103/PhysRevB.101.041105.
Chiriacò, Giuliano, Millis, Andrew J., and Aleiner, Igor L. Mon . "Negative absolute conductivity in photoexcited metals". United States. doi:10.1103/PhysRevB.101.041105.
@article{osti_1582397,
title = {Negative absolute conductivity in photoexcited metals},
author = {Chiriacò, Giuliano and Millis, Andrew J. and Aleiner, Igor L.},
abstractNote = {We show that in a model of a metal photoexcited by a transient pump pulse resonant with a phonon mode, the absolute dc conductivity may become negative, depending on the interplay between the electronic structure, the phonon frequency, and the pump intensity. Here, the analysis includes the effects of inelastic scattering and thermal relaxation. Results for the time evolution of the negative conductivity state are presented; the associated nonequilibrium physics may persist for long times after the pulse. Our findings provide a theoretical justification for previously proposed phenomenology and indicate new routes to the generation and exploration of intrinsically nonequilibrium states.},
doi = {10.1103/PhysRevB.101.041105},
journal = {Physical Review B},
number = 4,
volume = 101,
place = {United States},
year = {2020},
month = {1}
}

Journal Article:
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