Noncollinear ferromagnetism in (III,Mn)V semiconductors

被引：64

作者：

Schliemann, J ^{[1
]}

MacDonald, AH

机构：

[1] Univ Texas, Dept Phys, Austin, TX 78712 USA

[2] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.88.137201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the stability of the collinear ferromagnetic state in kinetic exchange models for (III,Mn)V semiconductors with randomly distributed Mn ions. Our results suggest that noncollinear ferromagnetism is common to these semiconductor systems. The instability of the collinear state is due to long-range fluctuations involving a large fraction of the localized magnetic moments. We address conditions that favor the occurrence of noncollinear ground states and discuss unusual behavior that we predict for the temperature and field dependence of its saturation magnetization.

引用

页码：4 / 137201

页数：4

共 29 条

[1] Theory of magnetic anisotropy in III1-xMnxV ferromagnets -: art. no. 054418 [J].