Spin-transfer switching in MgO magnetic tunnel junction nanostructures

被引：17

作者：

Huai, Yiming ^{[1
]}

Pakala, Mahendra ^{[1
]}

Diao, Zhitao ^{[1
]}

Apalkov, Dmytro ^{[1
]}

Ding, Yunfei ^{[1
]}

Panchula, Alex ^{[1
]}

机构：

[1] Grandis Inc, Milpitas, CA 95035 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 304卷 / 01期

关键词：

spin transfer; MTJ; MRAM;

D O I：

10.1016/j.jmmm.2006.04.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin-transfer driven switching was observed in MgO based magnetic tunnelling junctions (MTJ) with tunnelling magneto resistance ratio of up to 160% and the average intrinsic switching current density (J(c0)) down to 2 MA/cm(2), which are the best known results reported in spin-transfer switched MTJ nanostructures. Based on a comparison of results both from MgO and AlOx MTJs, further switching current decrease via MgO dual structures with two pinned layers is discussed. (C) 2006 Elsevier B.V. All rights reserved.

引用

收藏

页码：88 / 92

页数：5

相关论文

共 27 条

[11] Field dependence of magnetization reversal by spin transfer -: art. no. 174402 [J].

Grollier, J ;

Cros, V ;

Jaffrès, H ;

Hamzic, A ;

George, JM ;

Faini, G ;

Ben Youssef, J ;

Le Gall, H ;

Fert, A .

PHYSICAL REVIEW B, 2003, 67 (17)

[12]

HUAI Y, 2005, Patent No. 6838740

[13] Spin transfer switching current reduction in magnetic tunnel junction based dual spin filter structures [J].

Huai, YM ;

Pakala, M ;

Diao, ZT ;

Ding, YF .

APPLIED PHYSICS LETTERS, 2005, 87 (22) :1-3

[14] Observation of spin-transfer switching in deep submicron-sized and low-resistance magnetic tunnel junctions [J].

Huai, YM ;

Albert, F ;

Nguyen, P ;

Pakala, M ;

Valet, T .

APPLIED PHYSICS LETTERS, 2004, 84 (16) :3118-3120

[15] Microwave oscillations of a nanomagnet driven by a spin-polarized current [J].

Kiselev, SI ;

Sankey, JC ;

Krivorotov, IN ;

Emley, NC ;

Schoelkopf, RJ ;

Buhrman, RA ;

Ralph, DC .

NATURE, 2003, 425 (6956) :380-383

[16] Time-resolved reversal of spin-transfer switching in a nanomagnet [J].

Koch, RH ;

Katine, JA ;

Sun, JZ .

PHYSICAL REVIEW LETTERS, 2004, 92 (08)

[17] Thermally assisted magnetization reversal in the presence of a spin-transfer torque [J].

Li, Z ;

Zhang, S .

PHYSICAL REVIEW B, 2004, 69 (13) :134416-1

[18] Angular dependence of spin-transfer switching in a magnetic nanostructure [J].

Mancoff, FB ;

Dave, RW ;

Rizzo, ND ;

Eschrich, TC ;

Engel, BN ;

Tehrani, S .

APPLIED PHYSICS LETTERS, 2003, 83 (08) :1596-1598

[19] Materials dependence of the spin-momentum transfer efficiency and critical current in ferromagnetic metal/Cu multilayers [J].

Pufall, MR ;

Rippard, WH ;

Silva, TJ .

APPLIED PHYSICS LETTERS, 2003, 83 (02) :323-325

[20] Currents, torques, and polarization factors in magnetic tunnel junctions [J].

Slonczewski, JC .

PHYSICAL REVIEW B, 2005, 71 (02)