Influence of top electrode on the current-induced magnetic switching in magnetic nanopillars

被引：2

作者：

Yang, T

Hamrle, J

Kimura, T

Otani, Y

机构：

[1] RIKEN, Frontier Res Syst, Wako, Saitama 3510198, Japan

[2] Japan Sci & Technol Corp, CREST, Tokyo, Japan

[3] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 16期

关键词：

D O I：

10.1063/1.2093921

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic nanopillars with variable top electrodes were fabricated to clarify the roles of the spin current and the spin accumulation in the current-induced magnetic switching. The critical switching current is significantly increased when the size of the top electrode is comparable to that of the nanopillar. This result implies that the dominant contribution in the current-induced magnetic switching is not the spin accumulation, but the spin current. (C) 2005 American Institute of Physics.

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页码：1 / 3

页数：3

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共 22 条

[1] Influence of current leads on critical current for spin precession in magnetic multilayers [J].

Berger, L .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 278 (1-2) :185-194

[2] New origin for spin current and current-induced spin precession in magnetic multilayers [J].

Berger, L .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (10) :5521-5525

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

Berger, L .

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

[4] Magnetization reversal by injection and transfer of spin:: experiments and theory [J].

Fert, A ;

Cros, V ;

George, JM ;

Grollier, J ;

Jaffrès, H ;

Hamzic, A ;

Vaurès, A ;

Faini, G ;

Ben Youssef, J ;

Le Gall, H .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 :1706-1711

[5] Comparison of energy and phase relaxation in metallic wires [J].

Gougam, AB ;

Pierre, F ;

Pothier, H ;

Esteve, D ;

Birge, NO .

JOURNAL OF LOW TEMPERATURE PHYSICS, 2000, 118 (5-6) :447-456

[6] 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

[7] Three-dimensional distribution of spin-polarized current inside (Cu/Co) pillar structures [J].

Hamrle, J ;

Kimura, T ;

Yang, T ;

Otani, Y .

PHYSICAL REVIEW B, 2005, 71 (09)

[8] Current-driven switching of magnetic layers [J].

Heide, C ;

Zilberman, PE ;

Elliott, RJ .

PHYSICAL REVIEW B, 2001, 63 (06)

[9] Spin injection, diffusion, and detection in lateral spin-valves [J].

Ji, Y ;

Hoffmann, A ;

Jiang, JS ;

Bader, SD .

APPLIED PHYSICS LETTERS, 2004, 85 (25) :6218-6220

[10] 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