Magnetic circular dichroism studies of carrier-induced ferromagnetism in (Ga1-xMnx)As

被引：257

作者：

Beschoten, B ^{[1
]}

Crowell, PA

Malajovich, I

Awschalom, DD

Matsukura, F

Shen, A

Ohno, H

机构：

[1] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[2] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[3] Tohoku Univ, Elect Commun Res Inst, Lab Elect Intelligent Syst, Sendai, Miyagi 98077, Japan

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.83.3073

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetic circular dichroism is used to investigate the evolution of ferromagnetism in the p-type magnetic semiconductor (Ga1-xMnx)As. Local Mn moments and holes produce two spectroscopically distinct contributions, whose properties reveal an antiferromagnetic Mn-hole alignment in the ferromagnetic state. These components are present in both metallic and insulating samples with different temperature and field dependences, suggesting that the holes play a mon active role in mediating the ferromagnetic exchange than in traditional RKKY systems.

引用

页码：3073 / 3076

页数：4

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