Current-driven magnetization reversal in a ferromagnetic semiconductor (Ga,Mn)As/GaAs/(Ga,Mn)As tunnel junction

被引：123

作者：

Chiba, D

Sato, Y

Kita, T

Matsukura, F

Ohno, H

机构：

[1] Tohoku Univ, Elect & Telecommun Res Inst, Lab Nanoelect & Spintron, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Japan Sci & Technol Agcy, Exploratory Res Adv Technol, Semicond Spintron Project, Tokyo, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.93.216602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Current-driven magnetization reversal in a ferromagnetic semiconductor based (Ga,Mn)As/GaAs/(Ga,Mn)As magnetic tunnel junction is demonstrated at 30 K. Magnetoresistance measurements combined with current pulse application on a rectangular 1.5x0.3 mum(2) device revealed that magnetization switching occurs at low critical current densities of 1.1-2.2x10(5) A/cm(2) despite the presence of spin-orbit interaction in the p-type semiconductor system. Possible mechanisms responsible for the effect are discussed.

引用

收藏

页数：4

相关论文

共 25 条

[1] Spin-polarized current switching of a Co thin film nanomagnet [J].

Albert, FJ ;

Katine, JA ;

Buhrman, RA ;

Ralph, DC .

APPLIED PHYSICS LETTERS, 2000, 77 (23) :3809-3811

[2] Quantitative study of magnetization reversal by spin-polarized current in magnetic multilayer nanopillars [J].

Albert, FJ ;

Emley, NC ;

Myers, EB ;

Ralph, DC ;

Buhrman, RA .

PHYSICAL REVIEW LETTERS, 2002, 89 (22)

[3] Towards metallic magnetic memory: How to interpret experimental results on magnetic switching induced by spin-polarized currents [J].

Bazaliy, YB ;

Jones, BA ;

Zhang, SC .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (11) :6793-6795

[4] Emission of spin waves by a magnetic multilayer traversed by a current [J].

Berger, L .

PHYSICAL REVIEW B, 1996, 54 (13) :9353-9358

[5] Tunneling magnetoresistance in (Ga,Mn)As-based heterostructures with a GaAs barrier [J].

Chiba, D ;

Matsukura, F ;

Ohno, H .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2004, 21 (2-4) :966-969

[6] 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

[7] Spin-polarized current induced switching in Co/Cu/Co pillars [J].

Grollier, J ;

Cros, V ;

Hamzic, A ;

George, JM ;

Jaffrès, H ;

Fert, A ;

Faini, G ;

Ben Youssef, J ;

Legall, H .

APPLIED PHYSICS LETTERS, 2001, 78 (23) :3663-3665

[8] Contribution of shape anisotropy to the magnetic configuration of (Ga, Mn)As [J].

Hamaya, K ;

Moriya, R ;

Oiwa, A ;

Taniyama, T ;

Kitamoto, Y ;

Yamazaki, Y ;

Munekata, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2004, 43 (2B) :L306-L308

[9] TUNNELING BETWEEN FERROMAGNETIC-FILMS [J].

JULLIERE, M .

PHYSICS LETTERS A, 1975, 54 (03) :225-226

[10] Magnetization dynamics with a spin-transfer torque [J].

Li, Z ;

Zhang, S .

PHYSICAL REVIEW B, 2003, 68 (02)