Impact of the interplay of piezoelectric strain and current-induced heating on the field-like spin–orbit torque in perpendicularly magnetized Ta/Co20Fe60B20/Ta/MgO film
- 18 January 2021
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 118 (3), 032401
- https://doi.org/10.1063/5.0035869
Abstract
Spin–orbit torques (SOTs) are known to be the most efficient way to manipulate the magnetization direction by electrical currents. While, conventionally, one symmetry component of the SOTs, namely, the damping-like torque, was considered to play a primary role, recently, the significance of the other component, the field-like torque, has been revised, owing to the non-trivial dynamics it can induce in heavy metal/ferromagnet multilayers. In this work, we first discuss the unusual behavior of the field-like SOT in a Ta/CoFeB/Ta/MgO multilayer system with a reduced magnetic anisotropy and demonstrate an energy-efficient approach to manipulate the magnitude of the SOT effective fields. Finally, our results show a possibility to engineer the anisotropy of the field-like SOTs by piezoelectric strain, which can be potentially attractive for application in spintronics.Keywords
Funding Information
- Deutsche Forschungsgemeinschaft (KL1811/18)
- Graduate School of Excellence Materials Science In Mainz (DFG/GSC266)
- European Commission (ARTES 793159)
- European Commission (ITN MagnEFi No.860060)
- European Commission (DFG, SFB TRR 173 Spin+X Project No. A01 268565370)
- European Commission (ERC-Syg-2019 3D MAGiC No. 856538)
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