Materials dependence of the spin-momentum transfer efficiency and critical current in ferromagnetic metal/Cu multilayers

被引：44

作者：

Pufall, MR ^{[1
]}

Rippard, WH ^{[1
]}

Silva, TJ ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Magnet Technol Div 816 01, Boulder, CO 80305 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 02期

关键词：

D O I：

10.1063/1.1590432

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have quantitatively compared spin-momentum transfer effects in FM/Cu multilayers, with FM=Co, Co90Fe10, Ni80Fe20, Ni40Fe10Cu50, and Fe. All of the measured multilayers exhibited an abrupt step up in resistance at a critical current I-c, the value of which was a linear function of applied magnetic field H-app. The spin-transfer efficiencies determined from these data were in substantial agreement with their predicted values over the range of materials studied. I-c(H-app), when evaluated at zero net field, was found to increase with the exchange energy density of the ferromagnet, demonstrating the tunability of the critical current by materials selection.

引用

页码：323 / 325

页数：3

共 24 条

[1] 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

[2]

Bozorth R.M., 1993, FERROMAGNETISM, P54

[3] 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

[4] 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

[5] POINT-CONTACT SPECTROSCOPY IN METALS [J].

JANSEN, AGM ;

VANGELDER, AP ;

WYDER, P .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1980, 13 (33) :6073-6118

[6] 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

[7]

KITTEL C, 1986, INTRO SOLID STATE PH, P454

[8] Spin-current-induced magnetotransport in Co-Cu-Co nanostructures [J].

Mancoff, FB ;

Russek, SE .

IEEE TRANSACTIONS ON MAGNETICS, 2002, 38 (05) :2853-2855

[9] Temporal evolution of spin-polarization in ferromagnetic tunnel junctions [J].

Monsma, DJ ;

Parkin, SSP .

APPLIED PHYSICS LETTERS, 2000, 77 (06) :883-885

[10] Current-induced switching of domains in magnetic multilayer devices [J].

Myers, EB ;

Ralph, DC ;

Katine, JA ;

Louie, RN ;

Buhrman, RA .

SCIENCE, 1999, 285 (5429) :867-870

← 1 2 3 →