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

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 13期

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

页码：1639 / 1642

页数：4

共 19 条

[11] STABILITY OF 4F CONFIGURATIONS IN RARE-EARTH-METAL COMPOUNDS [J].

LAUBSCHAT, C ;

KAINDL, G ;

SCHNEIDER, WD ;

REIHL, B ;

MARTENSSON, N .

PHYSICAL REVIEW B, 1986, 33 (10) :6675-6683

[12]

LAUBSCHAT C, IN PRESS

[13] SURFACE ELECTRONIC-STRUCTURE OF CEN [J].

NORMAN, MR ;

WIMMER, E ;

FREEMAN, AJ .

PHYSICAL REVIEW B, 1985, 32 (12) :7830-7834

[14]

PARKS RD, 1982, VALENCE INSTABILITIE, P239

[15]

PATTHEY F, 1986, EUROPHYS LETT, P883

[16]

SCHNEIDER WD, 1985, PHYS REV B, V32, P6819, DOI 10.1103/PhysRevB.32.6819

[17] RARE-EARTH INTERMETALLICS AS SYNTHETIC AMMONIA CATALYSTS [J].

TAKESHITA, T ;

WALLACE, WE ;

CRAIG, RS .

JOURNAL OF CATALYSIS, 1976, 44 (02) :236-243

[18]

TANUMA S, 1987, SURF SCI, V192, pL849, DOI 10.1016/S0039-6028(87)81156-1

[19] DIVALENT SURFACE-STATE ON METALLIC SAMARIUM [J].

WERTHEIM, GK ;

CRECELIUS, G .

PHYSICAL REVIEW LETTERS, 1978, 40 (12) :813-816

← 1 2 →