SURFACE AND BULK ELECTRONIC-STRUCTURE OF CE METAL STUDIED BY HIGH-RESOLUTION RESONANT PHOTOEMISSION

被引：151

作者：

WESCHKE, E

LAUBSCHAT, C

SIMMONS, T

DOMKE, M

STREBEL, O

KAINDL, G

机构：

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

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.44.8304

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-resolution resonant photoemission (PE) at the 4d --> 4f and 3d --> 4f thresholds is applied to study the electronic structure of Ce metal. Due to the different surface sensitivities, the resulting 4f PE spectra, which are almost free of non-4f background, reflect directly a substantial change in 4f electronic structure of alpha-Ce metal towards gamma-like behavior at the surface. This finding resolves a longstanding discrepancy between the results of surface-sensitive 4f PE and those of bulk model calculations. Pure surface and bulk 4f PE signals are derived for alpha-Ce metal.

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页码：8304 / 8307

页数：4

相关论文

共 16 条

[1] ELECTRONIC-STRUCTURE OF CERIUM AND LIGHT RARE-EARTH INTERMETALLICS [J].

ALLEN, JW ;

OH, SJ ;

GUNNARSSON, O ;

SCHONHAMMER, K ;

MAPLE, MB ;

TORIKACHVILI, MS ;

LINDAU, I .

ADVANCES IN PHYSICS, 1986, 35 (03) :275-316

[2]

DOMKE M, 1990, SYNCHROTRON RAD NEWS, V3, P21

[3] RESONANCE PHOTOEMISSION FOR F-ELECTRON SYSTEMS [J].

GUNNARSSON, O ;

LI, TC .

PHYSICAL REVIEW B, 1987, 36 (18) :9488-9499

[4] PHOTOEMISSION FROM CE COMPOUNDS - EXACT MODEL CALCULATION IN THE LIMIT OF LARGE DEGENERACY [J].

GUNNARSSON, O ;

SCHONHAMMER, K .

PHYSICAL REVIEW LETTERS, 1983, 50 (08) :604-607

[5] ELECTRON SPECTROSCOPIES FOR CE COMPOUNDS IN THE IMPURITY MODEL [J].

GUNNARSSON, O ;

SCHONHAMMER, K .

PHYSICAL REVIEW B, 1983, 28 (08) :4315-4341

[6] A SIMPLE-MODEL CALCULATION FOR XPS, BIS AND EELS 4F-EXCITATIONS IN CE AND LA COMPOUNDS [J].

IMER, JM ;

WUILLOUD, E .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1987, 66 (02) :153-160

[7] VALENCE STATE AT THE SURFACE OF RARE-EARTH-METALS [J].

JOHANSSON, B .

PHYSICAL REVIEW B, 1979, 19 (12) :6615-6619

[8] SURFACE ELECTRONIC-STRUCTURE OF ALPHA-LIKE CE COMPOUNDS [J].

LAUBSCHAT, C ;

WESCHKE, E ;

HOLTZ, C ;

DOMKE, M ;

STREBEL, O ;

KAINDL, G .

PHYSICAL REVIEW LETTERS, 1990, 65 (13) :1639-1642

[9] 3D-]4F RESONANT PHOTOEMISSION IN RARE-EARTH SYSTEMS [J].

LAUBSCHAT, C ;

WESCHKE, E ;

KALKOWSKI, G ;

KAINDL, G .

PHYSICA SCRIPTA, 1990, 41 (01) :124-129

[10] HIGH-RESOLUTION PHOTOEMISSION-STUDY OF THE LOW-ENERGY EXCITATIONS IN 4F-ELECTRON SYSTEMS [J].

PATTHEY, F ;

IMER, JM ;

SCHNEIDER, WD ;

BECK, H ;

BAER, Y ;

DELLEY, B .

PHYSICAL REVIEW B, 1990, 42 (14) :8864-8881