ELECTRONIC AND STRUCTURAL-PROPERTIES OF THE CU-BI2CASR2CU2O8 INTERFACE

被引:5
|
作者
BERNHOFF, H [1 ]
QVARFORD, M [1 ]
SODERHOLM, S [1 ]
FLODSTROM, AS [1 ]
ANDERSEN, JN [1 ]
NYHOLM, R [1 ]
KARLSSON, UO [1 ]
LINDAU, I [1 ]
机构
[1] UNIV LUND,MAXLAB,S-22100 LUND,SWEDEN
来源
PHYSICA C | 1991年 / 180卷 / 1-4期
关键词
D O I
10.1016/0921-4534(91)90649-J
中图分类号
O59 [应用物理学];
学科分类号
摘要
The formation of the Cu-Bi2CaSr2Cu2O8 interface has been studied by photoelectron spectroscopy using synchrotron radiation. Photon energies in the range 20-1000 eV were utilized in order to probe both the valence band and to monitor chemical changes upon Cu deposition, as revealed by the core-level shifts. A strong chemical reaction between Bi2CaSr2CuO8 and Cu is manifested by the formation of metallic Bi. From the intensity variations as a function of electron emission angle it is shown that the metallic Bi segregates to the top surface layer.
引用
收藏
页码:120 / 123
页数:4
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