Origin of size effect on superconductivity in (R0.8Pr0.2)Ba2Cu3O7 studied by soft X-ray absorption spectroscopy

J. M. Chen; P. Nachimuthu; Jiunn-Yuan Lin; I. P. Hong; C. F. Chang; H. D. Yang

doi:10.1016/S0009-2614(01)00122-1

Origin of size effect on superconductivity in (R_0.8Pr_0.2)Ba₂Cu₃O₇ studied by soft X-ray absorption spectroscopy

J. M. Chen^*, P. Nachimuthu, Jiunn-Yuan Lin, I. P. Hong, C. F. Chang, H. D. Yang

^*Corresponding author for this work

Institute of Physics

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

Abstract

O K-edge X-ray absorption near-edge structure (XANES) spectroscopy of (R_0.8Pr_0.2)Ba₂Cu₃O₇ (R=Y, Tm, Dy, Gd, Eu and Sm) has been performed to investigate the dependence of hole distribution on ionic size of the R³⁺ ions. Near the O 1s absorption edge, pre-peaks at ~527.8 and ~528.5 eV are assigned to transitions into O 2p hole states located in the CuO₃ ribbons and CuO₂ planes, respectively. As deduced from O K-edge X-ray absorption spectra, the hole concentrations in the CuO₂ planes decrease monotonically with increasing ionic size of the rare-earth elements. The present XANES results clearly demonstrate that the suppression of superconductivity in (R_1-xPr_x)Ba₂Cu₃O₇ with ionic radius of the R³⁺ ions results predominantly from the hole-depletion effect.

Original language	American English
Pages (from-to)	85-91
Number of pages	7
Journal	Chemical Physics Letters
Volume	337
Issue number	1-3
DOIs	https://doi.org/10.1016/S0009-2614(01)00122-1
State	Published - 30 Mar 2001

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@article{63062555166646c0a99aaf95097fa71c,

title = "Origin of size effect on superconductivity in (R0.8Pr0.2)Ba2Cu3O7 studied by soft X-ray absorption spectroscopy",

abstract = "O K-edge X-ray absorption near-edge structure (XANES) spectroscopy of (R0.8Pr0.2)Ba2Cu3O7 (R=Y, Tm, Dy, Gd, Eu and Sm) has been performed to investigate the dependence of hole distribution on ionic size of the R3+ ions. Near the O 1s absorption edge, pre-peaks at ~527.8 and ~528.5 eV are assigned to transitions into O 2p hole states located in the CuO3 ribbons and CuO2 planes, respectively. As deduced from O K-edge X-ray absorption spectra, the hole concentrations in the CuO2 planes decrease monotonically with increasing ionic size of the rare-earth elements. The present XANES results clearly demonstrate that the suppression of superconductivity in (R1-xPrx)Ba2Cu3O7 with ionic radius of the R3+ ions results predominantly from the hole-depletion effect.",

author = "Chen, {J. M.} and P. Nachimuthu and Jiunn-Yuan Lin and Hong, {I. P.} and Chang, {C. F.} and Yang, {H. D.}",

year = "2001",

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doi = "10.1016/S0009-2614(01)00122-1",

language = "American English",

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pages = "85--91",

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T1 - Origin of size effect on superconductivity in (R0.8Pr0.2)Ba2Cu3O7 studied by soft X-ray absorption spectroscopy

AU - Chen, J. M.

AU - Nachimuthu, P.

AU - Lin, Jiunn-Yuan

AU - Hong, I. P.

AU - Chang, C. F.

AU - Yang, H. D.

PY - 2001/3/30

Y1 - 2001/3/30

N2 - O K-edge X-ray absorption near-edge structure (XANES) spectroscopy of (R0.8Pr0.2)Ba2Cu3O7 (R=Y, Tm, Dy, Gd, Eu and Sm) has been performed to investigate the dependence of hole distribution on ionic size of the R3+ ions. Near the O 1s absorption edge, pre-peaks at ~527.8 and ~528.5 eV are assigned to transitions into O 2p hole states located in the CuO3 ribbons and CuO2 planes, respectively. As deduced from O K-edge X-ray absorption spectra, the hole concentrations in the CuO2 planes decrease monotonically with increasing ionic size of the rare-earth elements. The present XANES results clearly demonstrate that the suppression of superconductivity in (R1-xPrx)Ba2Cu3O7 with ionic radius of the R3+ ions results predominantly from the hole-depletion effect.

AB - O K-edge X-ray absorption near-edge structure (XANES) spectroscopy of (R0.8Pr0.2)Ba2Cu3O7 (R=Y, Tm, Dy, Gd, Eu and Sm) has been performed to investigate the dependence of hole distribution on ionic size of the R3+ ions. Near the O 1s absorption edge, pre-peaks at ~527.8 and ~528.5 eV are assigned to transitions into O 2p hole states located in the CuO3 ribbons and CuO2 planes, respectively. As deduced from O K-edge X-ray absorption spectra, the hole concentrations in the CuO2 planes decrease monotonically with increasing ionic size of the rare-earth elements. The present XANES results clearly demonstrate that the suppression of superconductivity in (R1-xPrx)Ba2Cu3O7 with ionic radius of the R3+ ions results predominantly from the hole-depletion effect.

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U2 - 10.1016/S0009-2614(01)00122-1

DO - 10.1016/S0009-2614(01)00122-1

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AN - SCOPUS:0003053190

SN - 0009-2614

VL - 337

SP - 85

EP - 91

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Origin of size effect on superconductivity in (R_0.8Pr_0.2)Ba₂Cu₃O₇ studied by soft X-ray absorption spectroscopy

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