TY - JOUR
T1 - Efficient Spin Torques in Antiferromagnetic CoO/Pt Quantified by Comparing Field- And Current-Induced Switching
AU - Baldrati, L.
AU - Schmitt, C.
AU - Gomonay, O.
AU - Lebrun, R.
AU - Ramos, R.
AU - Saitoh, E.
AU - Sinova, J.
AU - Kläui, M.
N1 - Funding Information:
The authors thank A. Ross, J. Henrizi, A. Dion, and T. Reimer for skillful technical assistance. L. B. acknowledges the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant agreements ARTES No. 793159. O. G. acknowledges the EU FET Open RIA Grant No. 766566, the DFG (project SHARP 397322108), and that this work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—TRR 288—422213477 (project A09). L. B., R. L., and M. K. acknowledge support from the Graduate School of Excellence Materials Science in Mainz (MAINZ) DFG 266, the DAAD (Spintronics network, Project No. 57334897), and all groups from Mainz acknowledge that this work was Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—TRR 173–268565370 (projects A01, A03, A11, B02, and B12). R. L. and M. K. acknowledge financial support from the Horizon 2020 Framework Programme of the European Commission under FET-Open Grant Agreement No. 863155 (s-Nebula) and the European Research Council (ERC) Grant No. 856538 3D MAGIC. J. S. acknowledges support from the Grant Agency of the Czech Republic Grant No. 19-28375X and ASPIN EU FET Open RIA Grant No. 766566. This work was also supported by ERATO “Spin Quantum Rectification Project” (Grant No. JPMJER1402) and the Grant-in-Aid for Scientific Research on Innovative Area, “Nano Spin Conversion Science” (Grant No. JP26103005), Grant-in-Aid for Scientific Research (S) (Grant No. JP19H05600) from JSPS KAKENHI, R. R. also acknowledges support by Grant-in-Aid for Scientific Research (C) (Grant No. JP20K05297), from JSPS KAKENHI, Japan. R. L. acknowledges the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant agreement FAST No. 752195.
Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/8/14
Y1 - 2020/8/14
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.125.077201
DO - 10.1103/PhysRevLett.125.077201
M3 - Article
C2 - 32857543
AN - SCOPUS:85090175349
SN - 0031-9007
VL - 125
JO - Physical Review Letters
JF - Physical Review Letters
IS - 7
M1 - 077201
ER -