GIANT MAGNETIC-MOMENTS IN 4D CLUSTERS

被引：347

作者：

REDDY, BV ^{[1
]}

KHANNA, SN ^{[1
]}

DUNLAP, BI ^{[1
]}

机构：

[1] USN, RES LAB, DIV CHEM, WASHINGTON, DC 20375 USA

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.70.3323

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electronic structure of 13-atom clusters of 4d nonmagnetic solids Pd, Rh, and Ru has been studied using a linear combination of atomic orbitals molecular-orbital approach within the density functional formalism. Pd13, Rh13, and Ru13 are all found to have nonzero magnetic moments. Unexpectedly, the ground state of Rh13 is found to have 21 unpaired electrons and thus a magnetic moment of 21 mu(B). These 4d-element magnetic moments are a result of the reduced dimensionality and the enhanced electronic degeneracy due to the symmetry of the cluster. The effect of impurities on the moments is examined through calculations on FePd12, FeRh12, RhPd12, and RuPd12 clusters.

引用

页码：3323 / 3326

页数：4

共 34 条

[1]

BLOOMFIELD L, COMMUNICATION

[2]

BLUGEL B, 1992, PHYS REV LETT, V68, P851

[3]

BOZARTH RM, 1961, PHYS REV, V122, P1157

[4] MAGNETIC-PROPERTIES OF FREE COBALT CLUSTERS [J].