Efficient current-induced magnetization reversal by spin-orbit torque in Pt/Co/Pt

Rowan-Robinson, R.M.; Hindmarch, A.T.; Atkinson, D.

doi:10.1063/1.5046503

Efficient current-induced magnetization reversal by spin-orbit torque in Pt/Co/Pt

Rowan-Robinson, R.M.; Hindmarch, A.T.; Atkinson, D.

Authors

R.M. Rowan-Robinson

Dr Aidan Hindmarch a.t.hindmarch@durham.ac.uk
Associate Professor

Professor Del Atkinson del.atkinson@durham.ac.uk
Professor

Abstract

Current-induced magnetization reversal due to spin-orbit torque is demonstrated in an anisotropy controlled Pt/Co/Pt trilayer. The samples were designed to have weak perpendicular magnetic anisotropy, with a measured anisotropy field of (1340±20) Oe. Reversal is shown to be dominated by a damping-like torque associated with the spin-Hall effect. A small in-plane magnetic field was required to break the symmetry and enable reversal. With a 273 Oe field, magnetization reversal occurred with a current density amplitude of only 5×1010 A m−2, which is shown to be consistent with a simple model. The field-like torque is negligible, so measurements indicate that the imaginary part of the spin-mixing conductance associated with Co/Pt interfaces must be negligible.

Citation

Rowan-Robinson, R., Hindmarch, A., & Atkinson, D. (2018). Efficient current-induced magnetization reversal by spin-orbit torque in Pt/Co/Pt. Journal of Applied Physics, 124(18), Article 183901. https://doi.org/10.1063/1.5046503

Journal Article Type	Article
Acceptance Date	Oct 15, 2018
Online Publication Date	Nov 8, 2018
Publication Date	Nov 8, 2018
Deposit Date	Nov 9, 2018
Publicly Available Date	Nov 8, 2019
Journal	Journal of Applied Physics
Print ISSN	0021-8979
Electronic ISSN	1089-7550
Publisher	American Institute of Physics
Peer Reviewed	Peer Reviewed
Volume	124
Issue	18
Article Number	183901
DOI	https://doi.org/10.1063/1.5046503

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Copyright Statement
© 2018 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Rowan-Robinson, R. M., Hindmarch, A. T. & Atkinson, D. (2018). Efficient current-induced magnetization reversal by spin-orbit torque in Pt/Co/Pt. Journal of Applied Physics 124(18): 183901 and may be found at https://doi.org/10.1063/1.5046503