Abstract
Current-induced spin-orbit torques in Co2FeAl/Pt ultrathin bilayers are studied using a magnetoresistive harmonic response technique, which distinguishes the dampinglike and fieldlike contributions. The presence of a temperature-dependent magnetic proximity effect is observed through the anomalous Hall and anisotropic magnetoresistances, which are enhanced at low temperatures for thin platinum thicknesses. The fieldlike torque efficiency decreases steadily as the temperature is lowered for all Pt thicknesses studied, which we propose is related to the influence of the magnetic proximity effect on the fieldlike torque mechanism.
Original language | English (US) |
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Article number | 020403 |
Journal | Physical Review B |
Volume | 97 |
Issue number | 2 |
DOIs | |
State | Published - Jan 10 2018 |
Bibliographical note
Publisher Copyright:© 2018 American Physical Society.