XPS MEASUREMENTS IN BI2SR2CA1-XYXCU2O8+DELTA

被引：11

作者：

TAKAUCHI, H

ENOMOTO, H

SHIN, JS

YAMANAKA, H

FURUKAWA, H

TAKANO, Y

MORI, N

OZAKI, H

机构：

[1] OYAMA NATL COLL TECHNOL,DEPT ELEC ENG,OYAMA 323,JAPAN

[2] NIHON UNIV,DEPT PHYS,CHIYODA KU,TOKYO 101,JAPAN

来源：

PHYSICA B | 1990年 / 165卷

关键词：

D O I：

10.1016/S0921-4526(09)80199-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We performed X-ray photoemission spectroscopy (XPS) measurements in Bi2Sr2Ca1−xYxCu2O8+d system in order to investigate the relation between the Cu valence and superconductivity. The negative chemical shift of the Cu 2p spectra indicated that holes in the Cu site decreased with increasing Y concentration. The change in the shape and the positive chemical shift of the O 1s spectra indicated that holes on the oxygen site in Cu-O layer increased with increasing Y concentration. The superconducting transition temperature decreased monotonically with decreasing the Cu valence and vanished when the Cu valence became less than 2. © 1990, Elsevier Science Publishers B.V. (North-Holland). All rights reserved.

引用

页码：1227 / 1228

页数：2

共 4 条

[1] SUPERCONDUCTIVITY IN BI-CA-Y-SR-CU-O (2122) AND TL-CA-Y-BA-CU-O (1122) SYSTEMS - EFFECT OF SUBSTITUTION OF CABYY+ [J].