SURFACE ELECTRONIC-STRUCTURE OF ALPHA-LIKE CE COMPOUNDS

被引:158
作者
LAUBSCHAT, C
WESCHKE, E
HOLTZ, C
DOMKE, M
STREBEL, O
KAINDL, G
机构
[1] Institut F̈r Experimentalphysik, Freie Universität Berlin, D-1000 Berlin 33
关键词
D O I
10.1103/PhysRevLett.65.1639
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Photoemission studies with varying degrees of surface sensitivity are reported for the Ce 3d core-level and Ce 4f valence-band regions of the +-like Ce compounds CeIr2, CePd3, and CeRh3. In all cases studied, strong changes of the 4f electronic structure at the surface towards a more localized -like behavior are observed, requiring a reanalysis of previously reported photoemission spectra of +-like Ce compounds. Implications for an improved understanding of the surface-catalytic properties of Ce systems, as well as of the surface-electronic structure of narrow-band materials, are pointed out. © 1990 The American Physical Society.
引用
收藏
页码:1639 / 1642
页数:4
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