Boltzmann theory of engineered anisotropic magnetoresistance in (Ga,Mn)As

被引:71
作者
Jungwirth, T
Abolfath, M
Sinova, J
Kucera, J
MacDonald, AH
机构
[1] ASCR, Inst Phys, Prague 16253 6, Czech Republic
[2] Univ Texas, Dept Phys, Austin, TX 78712 USA
[3] Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA
关键词
D O I
10.1063/1.1523160
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report on a theoretical study of dc transport coefficients in (Ga,Mn)As diluted magnetic semiconductor ferromagnets that accounts for quasiparticle scattering from ionized Mn2+ acceptors with a local moment S=5/2 and from nonmagnetic compensating defects. In metallic samples Boltzmann transport theory with golden rule scattering rates accounts for the principle trends of the measured difference between resistances for magnetizations parallel and perpendicular to the current. We predict that the sign and magnitude of the anisotropic magnetoresistance can be changed by strain engineering or by altering chemical composition. (C) 2002 American Institute of Physics.
引用
收藏
页码:4029 / 4031
页数:3
相关论文
共 21 条
[1]   Theory of magnetic anisotropy in III1-xMnxV ferromagnets -: art. no. 054418 [J].
Abolfath, M ;
Jungwirth, T ;
Brum, J ;
MacDonald, AH .
PHYSICAL REVIEW B, 2001, 63 (05)
[2]   Anisotropic magnetoresistance in Ga1-xMnxAs -: art. no. 212407 [J].
Baxter, DV ;
Ruzmetov, D ;
Scherschligt, J ;
Sasaki, Y ;
Liu, X ;
Furdyna, JK ;
Mielke, CH .
PHYSICAL REVIEW B, 2002, 65 (21) :2124071-2124074
[3]  
Brooks H., 1955, ADV ELECT ELECT PHYS, V7
[4]   Zener model description of ferromagnetism in zinc-blende magnetic semiconductors [J].
Dietl, T ;
Ohno, H ;
Matsukura, F ;
Cibert, J ;
Ferrand, D .
SCIENCE, 2000, 287 (5455) :1019-1022
[5]   Hole-mediated ferromagnetism in tetrahedrally coordinated semiconductors [J].
Dietl, T ;
Ohno, H ;
Matsukura, F .
PHYSICAL REVIEW B, 2001, 63 (19)
[6]  
EDMONDS KW, CONDMAT0205517
[7]   Anomalous Hall effect in ferromagnetic semiconductors [J].
Jungwirth, T ;
Niu, Q ;
MacDonald, AH .
PHYSICAL REVIEW LETTERS, 2002, 88 (20) :4-207208
[8]   Curie temperature trends in (III,Mn)V ferromagnetic semiconductors -: art. no. 012402 [J].
Jungwirth, T ;
König, J ;
Sinova, J ;
Kucera, J ;
MacDonald, AH .
PHYSICAL REVIEW B, 2002, 66 (01) :124021-124024
[9]  
KONIG J, 2002, ELECT STRUCTURE MAGN
[10]   Ferromagnetism in diluted magnetic semiconductor heterojunction systems [J].
Lee, B ;
Jungwirth, T ;
MacDonald, AH .
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2002, 17 (04) :393-403