Journal
APPLIED PHYSICS LETTERS
Volume 108, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4942672
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- French Agence Nationale de la Recherche (ANR)
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We experimentally investigate the current-induced magnetization reversal in Pt/[Co/Ni](3)/Al multilayers combining the anomalous Hall effect and magneto-optical Kerr effect techniques in crossbar geometry. The magnetization reversal occurs through nucleation and propagation of a domain of opposite polarity for a current density of the order of 3 x 10(11) A/m(2). In these experiments, we demonstrate a full control of each stage: (i) the Orsted field controls the domain nucleation and (ii) domain-wall propagation occurs by spin torque from the Pt spin Hall effect. This scenario requires an in-plane magnetic field to tune the domain wall center orientation along the current for efficient domain wall propagation. Indeed, as nucleated, domain walls are chiral and Neel-like due to the interfacial Dzyaloshinskii-Moriya interaction. (C) 2016 AIP Publishing LLC.
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