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

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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 Jan 1

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ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

Song, Y. F., Chang, C. N., Kao, H. C. I., Hsieh, C. H., Liu, H. F., Lin, H. D., & Huang, W. W. (1999). 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. Physical Review B - Condensed Matter and Materials Physics, 60(6), 4357-4362. https://doi.org/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.}",

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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 - 1999/1/1

Y1 - 1999/1/1

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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10.1103/PhysRevB.60.4357