Quantitative study of magnetization reversal by spin-polarized current in magnetic multilayer nanopillars

被引：184

作者：

Albert, FJ ^{[1
]}

Emley, NC ^{[1
]}

Myers, EB ^{[1
]}

Ralph, DC ^{[1
]}

Buhrman, RA ^{[1
]}

机构：

[1] Cornell Univ, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.89.226802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied magnetic switching by spin-polarized currents and also the magnetoresistance in sub-100-nm-diam thin-film Co/Cu/Co nanostructures, with the current flowing perpendicular to the plane of the films. By independently varying the thickness of all three layers and measuring the change of the switching currents, we test the theoretical models for spin-transfer switching. In addition, the changes in the switching current and magnetoresistance as a function of the Cu layer thickness give two independent measurements of the room-temperature spin-diffusion length in Cu.

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页数：4

相关论文

共 29 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] Current-perpendicular (CPP) magnetoresistance in magnetic metallic multilayers [J].

Bass, J ;

Pratt, WP .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :274-289

[3] Modification of the Landau-Lifshitz equation in the presence of a spin-polarized current in colossal- and giant-magnetoresistive materials [J].

Bazaliy, YB ;

Jones, BA ;

Zhang, SC .

PHYSICAL REVIEW B, 1998, 57 (06) :R3213-R3216

[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] Switching of vertical giant magnetoresistance devices by current through the device [J].

Bussmann, K ;

Prinz, GA ;

Cheng, SF ;

Wang, D .

APPLIED PHYSICS LETTERS, 1999, 75 (16) :2476-2478

[6] ESCAPE-FIELD DISTRIBUTION FOR ESCAPE FROM A METASTABLE POTENTIAL WELL SUBJECT TO A STEADILY INCREASING BIAS FIELD [J].

GARG, A .

PHYSICAL REVIEW B, 1995, 51 (21) :15592-15595

[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]

HEIDE C, 1999, PHYS REV B, V63

[9] Current-driven magnetization reversal and spin-wave excitations in Co/Cu/Co pillars [J].

Katine, JA ;

Albert, FJ ;

Buhrman, RA ;

Myers, EB ;

Ralph, DC .

PHYSICAL REVIEW LETTERS, 2000, 84 (14) :3149-3152

[10] Width dependence of giant magnetoresistance in Cu/Co multilayer nanowires [J].

Katine, JA ;

Palanisami, A ;

Buhrman, RA .

APPLIED PHYSICS LETTERS, 1999, 74 (13) :1883-1885