O-1s x-ray near-edge absorption spectroscopy studies of La1.5-xCaxBa1.5Cu3Oy and La1.5CaxBa1.5-xCu3Oy

Y. F. Song; C. N. Chang; H. C.I. Kao; C. H. Hsieh; H. F. Liu; H. D. Lin; W. W. Huang

doi:10.1103/PhysRevB.60.4357

O-1s x-ray near-edge absorption spectroscopy studies of La_1.5-xCa_xBa_1.5Cu₃O_y and La_1.5Ca_xBa_1.5-xCu₃O_y

Y. F. Song, C. N. Chang, H. C.I. Kao, C. H. Hsieh, H. F. Liu, H. D. Lin, W. W. Huang

Department of Physics

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

7 Citations (Scopus)

Abstract

The O-1s x-ray near-edge-absorption spectra of La_1.5-xCa_xBa_1.5Cu₃O_y have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y_1-xPr_xBa₂Cu₃O_7-δ; the holes on the CuO₂ planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.

Original language	English
Pages (from-to)	4357-4362
Number of pages	6
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	60
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.60.4357
Publication status	Published - 1999

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.60.4357

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title = "O-1s x-ray near-edge absorption spectroscopy studies of La1.5-xCaxBa1.5Cu3Oy and La1.5CaxBa1.5-xCu3Oy",

abstract = "The O-1s x-ray near-edge-absorption spectra of La1.5-xCaxBa1.5Cu3Oy have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y1-xPrxBa2Cu3O7-δ; the holes on the CuO2 planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.",

author = "Song, {Y. F.} and Chang, {C. N.} and Kao, {H. C.I.} and Hsieh, {C. H.} and Liu, {H. F.} and Lin, {H. D.} and Huang, {W. W.}",

year = "1999",

doi = "10.1103/PhysRevB.60.4357",

language = "English",

volume = "60",

pages = "4357--4362",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

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T1 - O-1s x-ray near-edge absorption spectroscopy studies of La1.5-xCaxBa1.5Cu3Oy and La1.5CaxBa1.5-xCu3Oy

AU - Song, Y. F.

AU - Chang, C. N.

AU - Kao, H. C.I.

AU - Hsieh, C. H.

AU - Liu, H. F.

AU - Lin, H. D.

AU - Huang, W. W.

PY - 1999

Y1 - 1999

N2 - The O-1s x-ray near-edge-absorption spectra of La1.5-xCaxBa1.5Cu3Oy have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y1-xPrxBa2Cu3O7-δ; the holes on the CuO2 planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.

AB - The O-1s x-ray near-edge-absorption spectra of La1.5-xCaxBa1.5Cu3Oy have been measured by using synchrotron radiation. Their spectral features of the pre-edge spectra indicate that there is an electronic structure change similar to the effect of Pr in Y1-xPrxBa2Cu3O7-δ; the holes on the CuO2 planes increase with the doping concentration of Ca ions; not all the excess oxygen (for y≧7.0) in the basal plane supply holes; and there is a sign of increasing, rather than decreasing, the holes around the apical oxygen O(4) with the increase of the replacement of Ba by La on the Ba sites, an indication of a redistribution of holes.

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