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Title: Unconventional slowing down of electronic recovery in photoexcited charge-ordered La1/3Sr2/3FeO3

Abstract

We report the coupled slowing down of electronic and structural dynamics in a charge-ordered antiferromagnetic insulating oxide directly measured in the time domain. Following optical excitation, the recovery time of both transient optical reflectivity and x-ray diffraction intensity from a charge-ordered superstructure in a La1/3Sr2/3FeO3 thin film increases by orders of magnitude when the sample temperature approaches the phase transition temperature. The recovery time becomes much longer than the independently measured lattice cooling time, indicating a nonthermal origin of the slowing down. The combined experimental and theoretical investigations show that the slowing down of electronic recovery corresponds to the pseudo-critical dynamics that originates from magnetic interactions close to a weakly first-order phase transition.

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1478508
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English

Citation Formats

Zhu, Yi, Hoffman, Jason, Rowland, Clare E., Park, Hyowon, Walko, Donald A., Freeland, John W., Ryan, Philip J., Schaller, Richard D., Bhattacharya, Anand, and Wen, Haidan. Unconventional slowing down of electronic recovery in photoexcited charge-ordered La1/3Sr2/3FeO3. United States: N. p., 2018. Web. doi:10.1038/s41467-018-04199-4.
Zhu, Yi, Hoffman, Jason, Rowland, Clare E., Park, Hyowon, Walko, Donald A., Freeland, John W., Ryan, Philip J., Schaller, Richard D., Bhattacharya, Anand, & Wen, Haidan. Unconventional slowing down of electronic recovery in photoexcited charge-ordered La1/3Sr2/3FeO3. United States. doi:10.1038/s41467-018-04199-4.
Zhu, Yi, Hoffman, Jason, Rowland, Clare E., Park, Hyowon, Walko, Donald A., Freeland, John W., Ryan, Philip J., Schaller, Richard D., Bhattacharya, Anand, and Wen, Haidan. Fri . "Unconventional slowing down of electronic recovery in photoexcited charge-ordered La1/3Sr2/3FeO3". United States. doi:10.1038/s41467-018-04199-4.
@article{osti_1478508,
title = {Unconventional slowing down of electronic recovery in photoexcited charge-ordered La1/3Sr2/3FeO3},
author = {Zhu, Yi and Hoffman, Jason and Rowland, Clare E. and Park, Hyowon and Walko, Donald A. and Freeland, John W. and Ryan, Philip J. and Schaller, Richard D. and Bhattacharya, Anand and Wen, Haidan},
abstractNote = {We report the coupled slowing down of electronic and structural dynamics in a charge-ordered antiferromagnetic insulating oxide directly measured in the time domain. Following optical excitation, the recovery time of both transient optical reflectivity and x-ray diffraction intensity from a charge-ordered superstructure in a La1/3Sr2/3FeO3 thin film increases by orders of magnitude when the sample temperature approaches the phase transition temperature. The recovery time becomes much longer than the independently measured lattice cooling time, indicating a nonthermal origin of the slowing down. The combined experimental and theoretical investigations show that the slowing down of electronic recovery corresponds to the pseudo-critical dynamics that originates from magnetic interactions close to a weakly first-order phase transition.},
doi = {10.1038/s41467-018-04199-4},
journal = {Nature Communications},
issn = {2041-1723},
number = 1,
volume = 9,
place = {United States},
year = {2018},
month = {5}
}