Title
Perpendicular magnetization reversal in Pt/[Co/Ni]<inf>3</inf>/Al multilayers via the spin Hall effect of Pt
Date Issued
22 February 2016
Access level
open access
Resource Type
journal article
Author(s)
Laczkowski P.
Sampaio J.
Collin S.
Bouzehouane K.
Reyren N.
Jaffrès H.
Mougin A.
George J.M.
Université Paris-Saclay
Publisher(s)
American Institute of Physics Inc.
Abstract
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 × 1011 A/m2. In these experiments, we demonstrate a full control of each stage: (i) the Ørsted 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 Neél-like due to the interfacial Dzyaloshinskii-Moriya interaction.
Volume
108
Issue
8
Language
English
OCDE Knowledge area
Física y Astronomía
Scopus EID
2-s2.0-84959450390
Source
Applied Physics Letters
ISSN of the container
00036951
Source funding
Agence Nationale de la Recherche
Sponsor(s)
This work was partly supported by the French Agence Nationale de la Recherche (ANR) through project SOSPIN (2013-2016). We thank Cyrile Deranlot for fruitful discussions.
Sources of information:
Directorio de Producción Científica
Scopus