SURFACE AND BULK ELECTRONIC-STRUCTURE OF ALPHA-CE METAL AND CEIR2

被引：27

作者：

LAUBSCHAT, C

WESCHKE, E

DOMKE, M

SIMMONS, CT

KAINDL, G

机构：

[1] Institut für Experimentalphysik, Freie Universität Berlin, D-1000 Berlin 33

来源：

SURFACE SCIENCE | 1992年 / 269卷

关键词：

D O I：

10.1016/0039-6028(92)91318-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Resonant 4f photoemission spectra of alpha-Ce metal and alpha-like CeIr2, taken in the region of the Ce 4d and Ce 3d thresholds, reveal strong surface-induced changes of the correlated electronic structure. By decomposing the spectra into surface and bulk components, it is shown that in both alpha-like systems the surface layers are almost gamma-like, while in the bulk the 4f states are much stronger hybridized than previously assumed. The results support a description of the bulk electronic structure of CeIr2 in terms of narrow 4f bands. Core-hole induced final-state changes in 4f localization are briefly discussed.

引用

页码：605 / 609

页数：5

共 17 条

[1] EXTENSIVE DOUBLE-EXCITATION STATES IN ATOMIC HELIUM
DOMKE, M
XUE, C
PUSCHMANN, A
MANDEL, T
HUDSON, E
SHIRLEY, DA
KAINDL, G
GREENE, CH
SADEGHPOUR, HR
PETERSEN, H
[J]. PHYSICAL REVIEW LETTERS, 1991, 66 (10) : 1306 - 1309
[2] EXPERIMENTAL PROOF FOR COORDINATION-DEPENDENT VALENCE OF TM METAL
DOMKE, M
LAUBSCHAT, C
PRIETSCH, M
MANDEL, T
KAINDL, G
SCHNEIDER, WD
[J]. PHYSICAL REVIEW LETTERS, 1986, 56 (12) : 1287 - 1290
[3] DOMKE M, 1990, SYNCHROTRON RAD NEWS, V3, P19
[4] SURFACE ELECTRONIC-STRUCTURE OF CE IN THE ALPHA AND GAMMA-PHASE
ERIKSSON, O
ALBERS, RC
BORING, AM
FERNANDO, GW
HAO, YG
COOPER, BR
[J]. PHYSICAL REVIEW B, 1991, 43 (04): : 3137 - 3142
[5] PHOTOEMISSION FROM CE COMPOUNDS - EXACT MODEL CALCULATION IN THE LIMIT OF LARGE DEGENERACY
GUNNARSSON, O
SCHONHAMMER, K
[J]. PHYSICAL REVIEW LETTERS, 1983, 50 (08) : 604 - 607
[6] ELECTRON SPECTROSCOPIES FOR CE COMPOUNDS IN THE IMPURITY MODEL
GUNNARSSON, O
SCHONHAMMER, K
[J]. PHYSICAL REVIEW B, 1983, 28 (08): : 4315 - 4341
[7] A SIMPLE-MODEL CALCULATION FOR XPS, BIS AND EELS 4F-EXCITATIONS IN CE AND LA COMPOUNDS
IMER, JM
WUILLOUD, E
[J]. ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1987, 66 (02): : 153 - 160
[8] ALPHA-GAMMA TRANSITION IN CERIUM IS A MOTT TRANSITION
JOHANSSON, B
[J]. PHILOSOPHICAL MAGAZINE, 1974, 30 (03) : 469 - 482
[9] ENERGY POSITION OF 4F LEVELS IN RARE-EARTH-METALS
JOHANSSON, B
[J]. PHYSICAL REVIEW B, 1979, 20 (04): : 1315 - 1327
[10] SURFACE ELECTRONIC-STRUCTURE OF ALPHA-LIKE CE COMPOUNDS
LAUBSCHAT, C
WESCHKE, E
HOLTZ, C
DOMKE, M
STREBEL, O
KAINDL, G
[J]. PHYSICAL REVIEW LETTERS, 1990, 65 (13) : 1639 - 1642

← 1 2 →