Extraction of the spin torque non-adiabaticity from thermally activated domain wall hopping

被引：6

作者：

Heinen, J. ^{[3
]}

Hinzke, D. ^{[3
]}

Boulle, O. ^{[4
]}

Malinowski, G. ^{[5
]}

Swagten, H. J. M. ^{[6
]}

Koopmans, B. ^{[6
]}

Ulysse, C. ^{[7
]}

Faini, G. ^{[2
,7
]}

Klaeui, M. ^{[1
,3
,8
]}

机构：

[1] Paul Scherrer Inst, SwissFEL, CH-5232 Villigen, Switzerland

[2] Ecole Polytech Fed Lausanne, Lab Nanomagnetism & Spin Dynam, CH-1015 Lausanne, Switzerland

[3] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

[4] UMR CEA CNRS UJF Grenoble 1 Grenoble INP, F-38054 Grenoble 9, France

[5] Univ Paris 11, Phys Solides Lab, F-91405 Orsay, France

[6] Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands

[7] CNRS, Phynano Team, Lab Photon & Nanostruct, F-91460 Marcoussis, France

[8] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 24期

基金：

瑞士国家科学基金会; 欧洲研究理事会;

关键词：

MOTION;

D O I：

10.1063/1.3663215

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate the non-adiabaticity of current-induced domain wall motion by time resolved analysis of thermally activated domain wall motion between two metastable states within a Co/Pt multilayer wire with a strong uniaxial perpendicular anisotropy. By measuring the dwell times for which the domain wall remains in one state, we deduce the non-adiabaticity factor beta using two independent approaches: (i) the dependence of the dwell times on the injected current and (ii) the current-field equivalency. The comparison of the results allows us to gauge their reliability and the observed differences highlight the importance of the two dimensional (2D) nature of the domain wall. (C) 2011 American Institute of Physics. [doi:10.1063/1.3663215]

引用

页数：3

共 24 条

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