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

Rowan-Robinson, R. M. and Hindmarch, A. T. and Atkinson, D. (2018) 'Efficient current-induced magnetization reversal by spin-orbit torque in Pt/Co/Pt.', Journal of applied physics., 124 (18). p. 183901.

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.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1063/1.5046503
Publisher 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
Date accepted:15 October 2018
Date deposited:09 November 2018
Date of first online publication:08 November 2018
Date first made open access:08 November 2019

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