Determination of intrinsic spin Hall angle in Pt

Journal Article · Mon Oct 13 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4898593· OSTI ID:22350907

Wang, Yi; Deorani, Praveen; Qiu, Xuepeng; Kwon, Jae Hyun; Yang, Hyunsoo ^[1]

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1. Department of Electrical and Computer Engineering, National University of Singapore, 117576 (Singapore)

The spin Hall angle in Pt is evaluated in Pt/NiFe bilayers by spin torque ferromagnetic resonance measurements and is found to increase with increasing the NiFe thickness. To extract the intrinsic spin Hall angle in Pt by estimating the total spin current injected into NiFe from Pt, the NiFe thickness dependent measurements are performed and the spin diffusion in the NiFe layer is taken into account. The intrinsic spin Hall angle of Pt is determined to be 0.068 at room temperature and is found to be almost constant in the temperature range of 13–300 K.

• OSTI ID: 22350907
• Journal Information: Applied Physics Letters, Vol. 105, Issue 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CURRENTS
DIFFUSION
FERROMAGNETIC RESONANCE
IRON ALLOYS
LAYERS
NICKEL ALLOYS
PLATINUM
SPIN
TEMPERATURE RANGE 0273-0400 K
THICKNESS