Journal
APPLIED PHYSICS LETTERS
Volume 109, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4960793
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Funding
- National Science Center, Poland [UMO-2012/04/M/ST7/00799, UMO-2015/17/D/ST3/00500]
- European Research Council [ERC-2012-StG 307502-E-CONTROL]
- Academy of Finland [286361, 293929]
- Academy of Finland (AKA) [293929, 286361, 293929, 286361] Funding Source: Academy of Finland (AKA)
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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 19K. 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. Published by AIP Publishing.
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