Electronic and crystalline structure of epitaxial EuNix films grown on Ni(111) -: art. no. 075415

被引：4

作者：

Wieling, S ^{[1
]}

Molodtsov, SL

Laubschat, C

Behr, G

机构：

[1] Tech Univ Dresden, Inst Oberflachenphys & Mikrostrukturphys, D-01062 Dresden, Germany

[2] Inst Festkorperphys & Werkstofforsch, D-01171 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.65.075415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on an angle-resolved and resonant photoemission study of ordered EuNix films grown on Ni(111). Eu is found to be trivalent in the bulk. but divalent at the surface. The low-energy electron-diffraction pattern reveals a (root3 x root3)R30degrees overstructure with respect to Ni(111). Formation of a Ni-rich compound with a stoichiometry close to EuNi5 is concluded. At the surface the stoichiometry is modified due to lattice expansion caused by the surface valence transition of the Eu ions.

引用

页码：1 / 6

页数：6

共 25 条

[1] EXPERIMENTAL PROOF FOR COORDINATION-DEPENDENT VALENCE OF TM METAL [J].

DOMKE, M ;

LAUBSCHAT, C ;

PRIETSCH, M ;

MANDEL, T ;

KAINDL, G ;

SCHNEIDER, WD .

PHYSICAL REVIEW LETTERS, 1986, 56 (12) :1287-1290

[2] BULK AND SURFACE VALENCE IN YBPDX COMPOUNDS [J].

DOMKE, M ;

LAUBSCHAT, C ;

SAMPATHKUMARAN, EV ;

PRIETSCH, M ;

MANDEL, T ;

KAINDL, G ;

MIDDELMANN, HU .

PHYSICAL REVIEW B, 1985, 32 (12) :8002-8006

[3] ANGLE-RESOLVED PHOTOEMISSION DETERMINATION OF THE BAND-STRUCTURE AND MULTIELECTRON EXCITATIONS IN NI [J].

EBERHARDT, W ;

PLUMMER, EW .

PHYSICAL REVIEW B, 1980, 21 (08) :3245-3255

[4]

Eschrig H., 1989, Optimized LCAO Method: And the Electronic Structure of Extended Systems

[5] EXPLICIT LOCAL EXCHANGE-CORRELATION POTENTIALS [J].

HEDIN, L ;

LUNDQVIS.BI .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1971, 4 (14) :2064-&

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

JOHANSSON, B .

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

[7] ENERGY POSITION OF 4F LEVELS IN RARE-EARTH-METALS [J].

JOHANSSON, B .

PHYSICAL REVIEW B, 1979, 20 (04) :1315-1327

[8] SURFACE CORE-LEVEL SHIFTS AND SURFACE-STATES FOR THE HEAVY LANTHANIDE METALS [J].

KAINDL, G ;

HOHR, A ;

WESCHKE, E ;

VANDRE, S ;

SCHUSSLER-LANGEHEINE, C ;

LAUBSCHAT, C .

PHYSICAL REVIEW B, 1995, 51 (12) :7920-7923

[9] SURFACE EFFECTS ON CORE-LEVEL BINDING-ENERGIES AND VALENCE IN THULIUM CHALCOGENIDES [J].

KAINDL, G ;

LAUBSCHAT, C ;

REIHL, B ;

POLLAK, RA ;

MARTENSSON, N ;

HOLTZBERG, F ;

EASTMAN, DE .

PHYSICAL REVIEW B, 1982, 26 (04) :1713-1727

[10] 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

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