Efficient Spin Torques in Antiferromagnetic CoO/Pt Quantified by Comparing Field- And Current-Induced Switching

Baldrati L, Schmitt C, Gomonay O, Lebrun R, Ramos R, Saitoh E, Sinova J, Klaeui M (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Physical Review Letters American Physical Society

Book Volume: 125

Article Number: 077201

Journal Issue: 7

DOI: 10.1103/PhysRevLett.125.077201

Abstract

We achieve current-induced switching in collinear insulating antiferromagnetic CoO/Pt, with fourfold in-plane magnetic anisotropy. This is measured electrically by spin Hall magnetoresistance and confirmed by the magnetic field-induced spin-flop transition of the CoO layer. By applying current pulses and magnetic fields, we quantify the efficiency of the acting current-induced torques and estimate a current-field equivalence ratio of 4×10-11 T A-1 m2. The Néel vector final state (n⊥j) is in line with a thermomagnetoelastic switching mechanism for a negative magnetoelastic constant of the CoO.

Involved external institutions

Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) Tohoku University JP Japan (JP)

How to cite

APA:

Baldrati, L., Schmitt, C., Gomonay, O., Lebrun, R., Ramos, R., Saitoh, E.,... Klaeui, M. (2020). Efficient Spin Torques in Antiferromagnetic CoO/Pt Quantified by Comparing Field- And Current-Induced Switching. Physical Review Letters, 125(7). https://doi.org/10.1103/PhysRevLett.125.077201

MLA:

Baldrati, L., et al. "Efficient Spin Torques in Antiferromagnetic CoO/Pt Quantified by Comparing Field- And Current-Induced Switching." Physical Review Letters 125.7 (2020).

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