LOCAL ATOMIC CONFIGURATION AND AUGER VALENCE ELECTRON-SPECTRA IN BISRCACUO SINGLE-CRYSTALS

被引：8

作者：

FUJIWARA, Y ^{[1
]}

HIRATA, S ^{[1
]}

NISHIKUBO, M ^{[1
]}

KOBAYASHI, T ^{[1
]}

NAKAYAMA, H ^{[1
]}

FUJITA, H ^{[1
]}

机构：

[1] OSAKA UNIV,FAC ENGN,SUITA,OSAKA 565,JAPAN

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 02期

关键词：

D O I：

10.1109/20.133390

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Bi2Sr2CaCu2O(y) (2212) and Ca-doped Bi2Sr2CuO(y) (2201) single crystals have been systematically investigated by Auger Valence Electron Spectroscopy (AVES). In AVES measurements on two kinds of crystals, a drastic difference was observed in the spectral shape of Ca[2p,3p,3p], reflecting a difference in spin-orbit splitting induced by local atomic configuration in the vicinity of Ca atoms. Furthermore, Ca[2p,3p,4s] spectrum appeared in both the crystals, which indicates that the real valency of Ca atoms is deviated from +2 in the crystals. These results suggest that AVES is a promising probe for characterizing local atomic configuration and valence electron states of the constituent elements.

引用

页码：1166 / 1169

页数：4

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