Journal
APPLIED PHYSICS LETTERS
Volume 117, Issue 17, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/5.0023957
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Funding
- Ministry of Education, Singapore, under its Tier 2 Grants [MOE2018-T2-1-076, MOE2017-T2-2-011]
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We have investigated the effect of the Pt composition on the spin-orbit torque in a (Fe0.8Mn0.2)(1-)Pt-x(x) single-layer ferromagnet. We observed that while the field-like torque decreases and even reverses sign with increasing the Pt composition, the damping-like torque increases monotonically and reaches 0.99 Oe / ( 10 10 A / m 2 ) in a single-layer (Fe0.8Mn0.2)(0.52)Pt-0.48 film. The results corroborate the anomalous Hall effect and surface spin rotation model presented previously, and the relative ratio between the damping-like and field-like torques can be qualitatively understood as the relative phase change in spin-conserving and spin-flip scattering.
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