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Current-induced domain wall motion in Co/Pt nanowires: Separating spin torque and Oersted-field effects

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9 Author(s)
Heinen, J. ; Fachbereich Physik, Universität Konstanz, Universitätsstr. 10, 78457 Konstanz, Germany ; Boulle, O. ; Rousseau, K. ; Malinowski, G.
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We report on low temperature current induced domain wall depinning experiments on (Co/Pt) multilayer nanowires with perpendicular magnetization. Using a special experimental scheme, we are able to extract the different contributions of the Oersted field and spin torque from the dependence of the depinning field on the injected current for selected magnetization configurations. The spin torque contribution is found to be dominant with a small contribution of the Oersted field leading to a nonadiabaticity factor β in line with previous measurements.

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Applied Physics Letters  (Volume:96 ,  Issue: 20 )