Thermal effects on domain wall depinning from a single notch

被引：54

作者：

Martinez, E.

Lopez-Diaz, L.

Alejos, O.

Torres, L.

Tristan, C.

机构：

[1] Univ Burgos, E-09001 Burgos, Spain

[2] Univ Salamanca, E-37008 Salamanca, Spain

[3] Univ Valladolid, E-47071 Valladolid, Spain

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.98.267202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The statistical behavior of the domain wall depinning from a notch placed in a thin ferromagnetic wire is studied by means of a stochastic one-dimensional model which considers the wall as a rigid object inside a parabolic potential at room temperature. This analysis reveals the key role of thermal fluctuations on the current and field-induced domain wall depinning, and it allows for direct comparison with experiments in order to gain information on the nonadiabaticity degree of the spin torque.

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页数：4

相关论文

共 30 条

[1] Demagnetizing factors for rectangular ferromagnetic prisms [J].

Aharoni, A .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (06) :3432-3434

[2] Magnetic domain-wall logic [J].

Allwood, DA ;

Xiong, G ;

Faulkner, CC ;

Atkinson, D ;

Petit, D ;

Cowburn, RP .

SCIENCE, 2005, 309 (5741) :1688-1692

[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] Nonlinear domain-wall velocity enhancement by spin-polarized electric current [J].

Beach, G. S. D. ;

Knutson, C. ;

Nistor, C. ;

Tsoi, M. ;

Erskine, J. L. .

PHYSICAL REVIEW LETTERS, 2006, 97 (05)

[5] LOW-FIELD MAGNETORESISTANCE AND DOMAIN DRAG IN FERROMAGNETS [J].

BERGER, L .

JOURNAL OF APPLIED PHYSICS, 1978, 49 (03) :2156-2161

[6]

Bertotti G., 1998, Hysteresis in Magnetism: For Physicists, Materials Scientists, and Engineers

[7] The influence of thermal activation and the intrinsic temperature dependence of the spin torque effect in current-induced domain wall motion [J].

Dagras, P. ;

Klaeui, M. ;

Laufenberg, M. ;

Bedau, D. ;

Vila, L. ;

Faini, G. ;

Vaz, C. A. F. ;

Bland, J. A. C. ;

Ruediger, U. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (05) :1247-1252

[8] Switching a spin valve back and forth by current-induced domain wall motion [J].

Grollier, J ;

Boulenc, P ;

Cros, V ;

Hamzic, A ;

Vaurès, A ;

Fert, A ;

Faini, G .

APPLIED PHYSICS LETTERS, 2003, 83 (03) :509-511

[9] Dependence of current and field driven depinning of domain walls on their structure and chirality in permalloy nanowires [J].

Hayashi, Masamitsu ;

Thomas, Luc ;

Rettner, Charles ;

Moriya, Rai ;

Jiang, Xin ;

Parkin, Stuart S. P. .

PHYSICAL REVIEW LETTERS, 2006, 97 (20)

[10] Current-driven domain-wall depinning [J].

He, J ;

Li, Z ;

Zhang, S .

JOURNAL OF APPLIED PHYSICS, 2005, 98 (01)