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

L. Baldrati, C. Schmitt, O. Gomonay, R. Lebrun, R. Ramos, E. Saitoh, J. Sinova, M. Kläui

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

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.

Original languageEnglish
Article number077201
JournalPhysical review letters
Volume125
Issue number7
DOIs
Publication statusPublished - 2020 Aug 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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