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Title: Stroboscopic Tests for Thermalization of Electrons in Pump-Probe Experiments

Abstract

One of the goals of pump-probe spectroscopies is to determine how electrons relax after they have been driven out of equilibrium. It is challenging to determine how close electrons are to a thermal state solely by fitting their distribution to a Fermi-Dirac distribution. Here, instead, we propose that one compare the effective temperatures of both fermions and collective bosonic modes (derived from the fermions) to determine the distance from a thermal state. Measurements of effective fermionic and bosonic temperatures can be achieved directly via photoemission and nonresonant Raman scattering. Their difference quantifies the distance from thermal equilibrium.

Authors:
 [1];  [2];  [3];  [4]
+ Show Author Affiliations
  1. Inst. for Condensed Matter Physics of the National Academy of Sciences of Ukraine, Lviv (Ukraine); Georgetown Univ., Washington, DC (United States). Dept. of Physics
  2. Inst. for Condensed Matter Physics of the National Academy of Sciences of Ukraine, Lviv (Ukraine)
  3. Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
  4. Georgetown Univ., Washington, DC (United States). Dept. of Physics
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1546740
Alternate Identifier(s):
OSTI ID: 1546414
Grant/Contract Number:  
AC02-76SF00515; FG02-08ER46542; AC02-05CH11231; 17/2018; 7/2019
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 122; Journal Issue: 24; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Matveev, O. P., Shvaika, A. M., Devereaux, T. P., and Freericks, J. K. Stroboscopic Tests for Thermalization of Electrons in Pump-Probe Experiments. United States: N. p., 2019. Web. doi:10.1103/physrevlett.122.247402.
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Matveev, O. P., Shvaika, A. M., Devereaux, T. P., & Freericks, J. K. Stroboscopic Tests for Thermalization of Electrons in Pump-Probe Experiments. United States. doi:10.1103/physrevlett.122.247402.
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Matveev, O. P., Shvaika, A. M., Devereaux, T. P., and Freericks, J. K. Wed . "Stroboscopic Tests for Thermalization of Electrons in Pump-Probe Experiments". United States. doi:10.1103/physrevlett.122.247402. https://www.osti.gov/servlets/purl/1546740.
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@article{osti_1546740,
title = {Stroboscopic Tests for Thermalization of Electrons in Pump-Probe Experiments},
author = {Matveev, O. P. and Shvaika, A. M. and Devereaux, T. P. and Freericks, J. K.},
abstractNote = {One of the goals of pump-probe spectroscopies is to determine how electrons relax after they have been driven out of equilibrium. It is challenging to determine how close electrons are to a thermal state solely by fitting their distribution to a Fermi-Dirac distribution. Here, instead, we propose that one compare the effective temperatures of both fermions and collective bosonic modes (derived from the fermions) to determine the distance from a thermal state. Measurements of effective fermionic and bosonic temperatures can be achieved directly via photoemission and nonresonant Raman scattering. Their difference quantifies the distance from thermal equilibrium.},
doi = {10.1103/physrevlett.122.247402},
journal = {Physical Review Letters},
number = 24,
volume = 122,
place = {United States},
year = {2019},
month = {6}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI:  10.1103/physrevlett.122.247402
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