Theory of carrier mediated ferromagnetism in dilute magnetic oxides

被引：103

作者：

Calderon, M. J. ^{[1
]}

Das Sarma, S. ^{[1
]}

机构：

[1] Univ Maryland, Condensed Matter Theory Ctr, Dept Phys, College Pk, MD 20742 USA

来源：

ANNALS OF PHYSICS | 2007年 / 322卷 / 11期

基金：

美国国家科学基金会;

关键词：

magnetic oxides; carrier mediated ferromagnetism; RKKY; magnetic polaron percolation;

D O I：

10.1016/j.aop.2007.01.010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We analyze the origin of ferromagnetism as a result of carrier mediation in diluted magnetic oxide semiconductors in the light of the experimental evidence reported in the literature. We propose that a combination of percolation of magnetic polarons at lower temperature and Ruderman-Kittel-Kasuya-Yosida ferromagnetism at higher temperature may be the reason for the very high critical temperatures measured (up to similar to 700 K). (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：2618 / 2634

页数：17

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