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

被引：256
|
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
收藏
页码：3073 / 3076
页数：4
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