Polaronic effect in the x-ray absorption spectra of La 1-x Ca x MnO 3 manganites

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Polaronic effect in the x-ray absorption spectra of La 1-x Ca x MnO 3 manganites. / Huang, S. W.; Liu, Y. T.; Lee, J. M.; Chen, J. M.; Lee, J. F.; Schoenlein, R. W.; Chuang, Y. D.; Lin, J. Y.

In: Journal of physics. Condensed matter : an Institute of Physics journal, Vol. 31, No. 19, 195601, 2019.

Research output: Contribution to journalArticle

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Huang, S. W. ; 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 La 1-x Ca x MnO 3 manganites. In: Journal of physics. Condensed matter : an Institute of Physics journal. 2019 ; Vol. 31, No. 19.

RIS

TY - JOUR

T1 - Polaronic effect in the x-ray absorption spectra of La 1-x Ca x MnO 3 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

Y1 - 2019

N2 - X-ray absorption spectroscopy (XAS) is performed to study changes in the electronic structures of colossal magnetoresistance (CMR) and charged ordered (CO) La1-x Ca x MnO3 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-x Ca x MnO3 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.

U2 - 10.1088/1361-648X/ab05a2

DO - 10.1088/1361-648X/ab05a2

M3 - Article

C2 - 30848247

AN - SCOPUS:85062986160

VL - 31

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 1361-648X

IS - 19

M1 - 195601

ER -