X-ray absorption study of YBa2-xLaxCu3Oy

被引：4

作者：

Hsieh, CH

Chang, CN ^{[1
]}

Lee, SB

Kao, HCI

Chin, CH

机构：

[1] Natl Taiwan Normal Univ, Dept Phys, Taipei 117, Taiwan

[2] Tamkang Univ, Dept Chem, Tamsui 25137, Taiwan

来源：

SOLID STATE COMMUNICATIONS | 2000年 / 116卷 / 09期

关键词：

high-T-c superconductors; chemical synthesis; X-ray scattering; electronic states (localized); synchrotron radiation;

D O I：

10.1016/S0038-1098(00)00360-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The O-1s and Cu-2P(3/2) 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. (C) 2000 Elsevier Science Ltd. All rights reserved.

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收藏

页码：501 / 506

页数：6

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