1990年
Hole Distribution in YBaCuO System from the Analysis of Cu 2p-XPS, Cu 2p-XAS and O 1s-XAS
Journal of the Physical Society of Japan
- ,
- ,
- 巻
- 59
- 号
- 4
- 開始ページ
- 1384
- 終了ページ
- 1396
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1143/JPSJ.59.1384
We analyze the polarization dependence of the Cu 2p-XAS and the Cu 2p-XPS observed in the YBa2Cu3O7-δ system. To take into account the nonequivalent Cu sites in YBa2Cu3O7, we use a model where the impurity Anderson model and a CuO4 cluster model are linked, where the former and the latter describe the CuO2 plane and the CuO chain, respectively, For YBa2Cu3O6.5, the CuO4 cluster is replaced by a CuO3 cluster. For 0<
δ<
0.5, the spectrum is obtained by a superposition of the spectra for δ=0 and 0.5. Obtained results quantitatively reproduce the experimental results of Cu 2p-XAS, and the electron configuration of the ground state obtained from our spectral analysis suggests that extra holes will enter both the O sites in the CuO chains and the CuO2 layers. This picture is also supported by the analysis of the polarization dependence in the O ls-XAS. © 1990, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.
δ<
0.5, the spectrum is obtained by a superposition of the spectra for δ=0 and 0.5. Obtained results quantitatively reproduce the experimental results of Cu 2p-XAS, and the electron configuration of the ground state obtained from our spectral analysis suggests that extra holes will enter both the O sites in the CuO chains and the CuO2 layers. This picture is also supported by the analysis of the polarization dependence in the O ls-XAS. © 1990, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.
- リンク情報
- ID情報
-
- DOI : 10.1143/JPSJ.59.1384
- ISSN : 1347-4073
- ISSN : 0031-9015
- SCOPUS ID : 0000333134