Temperature dependence of spin-orbit torques in W/CoFeB bilayers

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Journal Title
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2016-08-08
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Language
en
Pages
1-4
Series
Applied Physics Letters, Volume 109, issue 6
Abstract
We report on the temperature variation of spin-orbit torques in perpendicularly magnetized W/CoFeB bilayers. Harmonic Hall voltage measurements in perpendicularly magnetized CoFeB reveal increased longitudinal and transverse effective magnetic field components at low temperatures. The damping-like spin-orbit torque reaches an efficiency of 0.55 at 19 K. Scanning transmission electron microscopy and X-ray reflectivity measurements indicate that considerable interface mixing between W and CoFeB may be responsible for strong spin-orbit interactions.
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| openaire: EC/FP7/307502/EU//E-CONTROL
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Citation
Skowroński , W , Cecot , M , Kanak , J , Ziȩtek , S , Stobiecki , T , Yao , L , Van Dijken , S , Nozaki , T , Yakushiji , K & Yuasa , S 2016 , ' Temperature dependence of spin-orbit torques in W/CoFeB bilayers ' , Applied Physics Letters , vol. 109 , no. 6 , 062407 , pp. 1-4 . https://doi.org/10.1063/1.4960793