X-ray absorption study of YBa2−xLaxCu3Oy

機構典藏 > College of Sciences > Graduate Institute & Department of Chemistry > Journal Article > Item 987654321/25428

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Title:	X-ray absorption study of YBa2−xLaxCu3Oy
Authors:	Hsieh, C.H.;Chang, C.N.;Lee, S.B.;Kao, H.-C.I.;Chin, C.H.
Contributors:	淡江大學化學學系
Keywords:	A. High-Tc superconductors;B. Chemical synthesis;C. X-ray scattering;D. Electronic states (localized);E. Synchrotron radiation
Date:	2000-10-31
Issue Date:	2009-12-01
Publisher:	Kidlington: Pergamon
Abstract:	The O-1s and Cu-2p3/2 X-ray absorption near-edge spectra of YBa2−xLaxCu3Oy have been measured by using synchrotron radiation. The total number of holes, as derived from the spectral data, decreases linearly with the increase of La content, x. The holes of O(4) are altered slightly, as compared to the decrease in the holes of the CuO2 planes, by the La3+ substitution of Ba2+. The main effect of La in YBa2−xLaxCu3Oy is to change the electronic structure in the CuO2 planes so that the concentration of the hole states is reduced.
Relation:	Solid State Communications 116(9), pp.501-506
DOI:	10.1016/S0038-1098(00)00360-4
Appears in Collections:	[Graduate Institute & Department of Chemistry] Journal Article

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