5. Efficient spin torques in antiferromagnetic CoO/Pt quantified by comparing field- and current- induced switching

Authors: Lorenzo Baldrati, Christin Schmitt, Olena Gomonay, Romain Lebrun, Rafael Ramos, Eiji Saitoh, Jairo Sinova, Mathias Kläui

Published: Thu, 12 Mar 2020

arXiv link
Data Set (Zenodo link)


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 4x1011TA1m2. The Néel vector final state (nj) is in line with a thermomagnetoelastic switching mechanism for a negative magnetoelastic constant of the CoO.

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