TY  - JOUR
JF  - Physical Review Materials
VL  - 5
ID  - discovery10121776
UR  - https://doi.org/10.1103/PhysRevMaterials.5.014413
Y1  - 2021/01//
TI  - Growth, strain, and spin-orbit torques in epitaxial Ni-Mn-Sb films sputtered on GaAs
N1  - This version is the version of record. For information on re-use, please refer to the publisher?s terms and conditions.
IS  - 1
AV  - public
A1  - Zhao, N
A1  - Sud, A
A1  - Sukegawa, H
A1  - Komori, S
A1  - Rogdakis, K
A1  - Yamanoi, K
A1  - Patchett, J
A1  - Robinson, JWA
A1  - Ciccarelli, C
A1  - Kurebayashi, H
KW  - Spin dynamics
KW  -  Spin texture
KW  -  Spin torque
KW  -  Spintronics
N2  - We report current-induced spin torques in epitaxial NiMnSb films on a commercially available epiready GaAs substrate. The NiMnSb was grown by cosputtering from three targets using optimized parameters. The films were processed into microscale bars to perform current-induced spin-torque measurements. Magnetic dynamics were excited by microwave currents, and electric voltages along the bars were measured to analyze the symmetry of the current-induced torques. We found that the extracted symmetry of the spin torques matches those expected from spin-orbit interaction in a tetragonally distorted half-Heusler crystal. Both fieldlike and dampinglike torques are observed in all the samples characterized, and the efficiency of the current-induced torques is comparable to that of ferromagnetic metal/heavy-metal bilayers.
ER  -