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08 December 2022
 
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Efficient spin torques in antiferromagnetic CoO/Pt quantified by comparing field- and current- induced switching
Lorenzo Baldrati ; Christin Schmitt ; Olena Gomonay ; Romain Lebrun ; Rafael Ramos ; Eiji Saitoh ; Jairo Sinova ; Mathias Kläui ;
Date 12 Mar 2020
AbstractWe achieve current-induced switching in collinear insulating antiferromagnetic CoO/Pt, with fourfold in-plane magnetic anisotropy, measured electrically by spin Hall magnetoresistance. We exploit the reversible spin flop transition in the CoO film, controlled by a magnetic field, to unambiguously evidence the current-induced antiferromagnetic switching. By applying current pulses and magnetic fields of different magnitude and orientation, we quantify directly the efficiency and direction of the acting current-induced torques and estimate a current-field equivalence ratio of $4x10^{-11} T A^{-1} m^2$.
Source arXiv, 2003.5923
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