Polaronic effect in the x-ray absorption spectra of La1-xCaxMnO3 manganites

S. W. Huang; Y. T. Liu; J. M. Lee; J. M. Chen; J. F. Lee; R. W. Schoenlein; Y. D. Chuang; J. Y. Lin

doi:10.1088/1361-648X/ab05a2

Polaronic effect in the x-ray absorption spectra of La_1-xCa_xMnO₃ manganites

S. W. Huang, Y. T. Liu, J. M. Lee, J. M. Chen, J. F. Lee, R. W. Schoenlein, Y. D. Chuang, J. Y. Lin

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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_xMnO₃ 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. 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.

Original language	English
Article number	195601
Journal	Journal of Physics Condensed Matter
Volume	31
Issue number	19
DOIs	https://doi.org/10.1088/1361-648X/ab05a2
State	Published - 1 Jan 2019

Keywords

colossal magnetoresistance
polaron
x-ray absorption

Access to Document

10.1088/1361-648X/ab05a2

Cite this

@article{9919b89d1421450f8c7bee64262bc198,

title = "Polaronic effect in the x-ray absorption spectra of La1-xCaxMnO3 manganites",

abstract = "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. 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.",

keywords = "colossal magnetoresistance, polaron, x-ray absorption",

author = "Huang, {S. W.} 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.}",

year = "2019",

month = jan,

day = "1",

doi = "10.1088/1361-648X/ab05a2",

language = "English",

volume = "31",

journal = "Journal of Physics Condensed Matter",

issn = "0953-8984",

publisher = "IOP Publishing Ltd.",

number = "19",

}

TY - JOUR

T1 - Polaronic effect in the x-ray absorption spectra of La1-xCaxMnO3 manganites

AU - Huang, S. W.

AU - Liu, Y. T.

AU - Lee, J. M.

AU - Chen, J. M.

AU - Lee, J. F.

AU - Schoenlein, R. W.

AU - Chuang, Y. D.

AU - Lin, J. Y.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - 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. 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.

AB - 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. 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.

KW - colossal magnetoresistance

KW - polaron

KW - x-ray absorption

UR - http://www.scopus.com/inward/record.url?scp=85062986160&partnerID=8YFLogxK

U2 - 10.1088/1361-648X/ab05a2

DO - 10.1088/1361-648X/ab05a2

M3 - Article

C2 - 30848247

AN - SCOPUS:85062986160

SN - 0953-8984

VL - 31

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 19

M1 - 195601

ER -

Polaronic effect in the x-ray absorption spectra of La_1-xCa_xMnO₃ manganites

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this