Magnetism and transport characteristics of (Ga,Mn)N in steady high fields

被引：8
|
作者：
Miura, T
Yamamoto, Y
Itaya, S
Suga, K
Kindo, K
Takenobu, T
Iwasa, Y
Hori, H
机构：
[1] Japan Adv Inst Sci & Technol, Sch Mat Sci, Tatsunokuchi, Ishikawa 9231292, Japan
[2] Tohoku Univ, IMR, Aoba Ku, Sendai, Miyagi 9808577, Japan
[3] Osaka Univ, KYOKUGEN, Toyonaka, Osaka 5608531, Japan
来源：
PHYSICA B-CONDENSED MATTER | 2004年 / 346卷
关键词：
gallium nitride; diluted magnetic semiconductor; magnetooptics; ferromagnetism; magnetoresistance; high magnetic field;
D O I：
10.1016/j.physb.2004.01.115
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The magnetism on (Ga,Mn)N with high-T-C is investigated and the ferromagnetic magnetization process is discussed in comparison with the superparamagnetism in the segregation model. Transport experiments were made in steady magnetic fields up to 27 T. The results show the close relation between spontaneous magnetization and carrier density. The anisotropy in magnetoresistance shows anomalous field dependence and suggests existence of some nonmagnetic origin. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：402 / 407
页数：6
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