MAGNETIC-BEHAVIOR OF SMALL VANADIUM CLUSTERS

被引：24

作者：

DORANTESDAVILA, J ^{[1
]}

DREYSSE, H ^{[1
]}

机构：

[1] UNIV NANCY 1,PHYS SOLIDE LAB,F-54506 VANDOEUVRE NANCY,FRANCE

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.47.3857

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electronic structure of small vanadium clusters is systematically studied as a function of the interaction parameters and cluster size with a bcc-like structure. For each topological arrangement, various possible magnetic states are considered and the transition from nonmagnetic to magnetic order is characterized. The average magnetic moment and the individual magnetic moments are determined self-consistently with the Hubbard tight-binding Hamiltonian. The magnetic behavior of vanadium clusters is very different from that of the bulk. However, some specific trends for cluster magnetism emerge. For the configurations studied, the average magnetic moment stays within a small set of values, whereas the local magnetic moments are very sensitive to the variation of the interparticle distance. A small magnetic moment in clusters is obtained for interatomic distances much smaller than the bulk distance.

引用

页码：3857 / 3863

页数：7

共 28 条

[1] APPEARANCE OF MAGNETIC-MOMENTS IN HYPERFINE PARTICLES OF VANADIUM METAL [J].

AKOH, H ;

TASAKI, A .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1977, 42 (03) :791-795

[2]

BARTLESS RJ, 1985, COMPARISON AB INITIO

[3] MAGNETIC-PROPERTIES OF 3D TRANSITION-METAL MONOLAYERS ON METAL SUBSTRATES [J].

BLUGEL, S ;

DRITTLER, B ;

ZELLER, R ;

DEDERICHS, PH .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1989, 49 (06) :547-562

[4] SPIN-POLARIZED ELECTRONIC-STRUCTURE OF VANADIUM [J].

BOUARAB, S ;

NAITLAZIZ, H ;

DEMANGEAT, C ;

MOKRANI, A ;

DREYSSE, H .

PHYSICAL REVIEW B, 1992, 46 (02) :889-897

[5] LOCAL SPIN-DENSITY THEORY FOR FERROMAGNETIC AND ANTIFERROMAGNETIC MATERIALS [J].

CHRISTENSEN, NE ;

GUNNARSSON, O ;

JEPSEN, O ;

ANDERSEN, OK .

JOURNAL DE PHYSIQUE, 1988, 49 (C-8) :17-22

[6]

CONKLIN JB, 1972, J PHYS PARIS C S5, V33, P213

[7] MAGNETISM AND COORDINATION-NUMBER FOR SYSTEMS WITH UNFILLED D-SHELLS [J].

DREYSSE, H ;

MOKRANI, A ;

BOUARAB, S ;

DEMANGEAT, C .

SURFACE SCIENCE, 1991, 251 :41-45

[8] A CONJECTURE ABOUT THE SIZE OF A PARTICULAR CELLULAR AUTOMATON - THE PERFECTLY GROWING CRYSTAL [J].

DREYSSE, H ;

RIEDINGER, R .

JOURNAL DE PHYSIQUE, 1987, 48 (06) :915-920

[9] SYMMETRY AND FERROMAGNETIC CLUSTERS [J].

DUNLAP, BI .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1991, 19 (1-4) :255-257

[10]

FINCK RL, 1990, PHYS REV B, V41, P10175

← 1 2 3 →