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Title: Polaronic effect in the x-ray absorption spectra of La 1-xCa xMnO 3 manganites

Abstract

X-ray absorption spectroscopy (XAS) is performed to study changes in the electronic structures of colossal magnetoresistance (CMR) and charged ordered (CO) La 1–xCa xMnO 3 manganites with respect to temperature. The pre-edge features in O and Mn K-edge XAS spectra, which are highly sensitive to the local distortion of MnO 6 octahedral, exhibit contrasting temperature dependence between CMR and CO samples. The seemingly counter-intuitive XAS temperature dependence can be reconciled in the context of polarons. Furthermore these results help identify the most relevant orbital states associated with polarons and highlight the crucial role played by polarons in understanding the electronic structures of manganites.

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [4];  [5];  [6]; ORCiD logo [2]
  1. Lund Univ., Lund (Sweden); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. National Chiao Tung Univ., Hsinchu (Taiwan)
  3. Lund Univ., Lund (Sweden); National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  4. National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1505421
Grant/Contract Number:  
AC02-76SF00515; 103-2112-M-009-007-MY3; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 31; Journal Issue: 19; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; colossal magnetoresistance; x-ray absorption; polaron

Citation Formats

Huang, Shi Wen, Liu, Y. T., Lee, J. M., Chen, J. M., Lee, J. F., Schoenlein, R. W., Chuang, Y. -D., and Lin, J. -Y. Polaronic effect in the x-ray absorption spectra of La1-xCaxMnO3 manganites. United States: N. p., 2019. Web. doi:10.1088/1361-648x/ab05a2.
Huang, Shi Wen, Liu, Y. T., Lee, J. M., Chen, J. M., Lee, J. F., Schoenlein, R. W., Chuang, Y. -D., & Lin, J. -Y. Polaronic effect in the x-ray absorption spectra of La1-xCaxMnO3 manganites. United States. doi:10.1088/1361-648x/ab05a2.
Huang, Shi Wen, Liu, Y. T., Lee, J. M., Chen, J. M., Lee, J. F., Schoenlein, R. W., Chuang, Y. -D., and Lin, J. -Y. Fri . "Polaronic effect in the x-ray absorption spectra of La1-xCaxMnO3 manganites". United States. doi:10.1088/1361-648x/ab05a2.
@article{osti_1505421,
title = {Polaronic effect in the x-ray absorption spectra of La1-xCaxMnO3 manganites},
author = {Huang, Shi Wen and Liu, Y. T. and Lee, J. M. and Chen, J. M. and Lee, J. F. and Schoenlein, R. W. and Chuang, Y. -D. and Lin, J. -Y},
abstractNote = {X-ray absorption spectroscopy (XAS) is performed to study changes in the electronic structures of colossal magnetoresistance (CMR) and charged ordered (CO) La1–xCaxMnO3 manganites with respect to temperature. The pre-edge features in O and Mn K-edge XAS spectra, which are highly sensitive to the local distortion of MnO6 octahedral, exhibit contrasting temperature dependence between CMR and CO samples. The seemingly counter-intuitive XAS temperature dependence can be reconciled in the context of polarons. Furthermore these results help identify the most relevant orbital states associated with polarons and highlight the crucial role played by polarons in understanding the electronic structures of manganites.},
doi = {10.1088/1361-648x/ab05a2},
journal = {Journal of Physics. Condensed Matter},
number = 19,
volume = 31,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
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This content will become publicly available on March 8, 2020
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