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Title: Determination of intrinsic spin Hall angle in Pt

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.
Authors:
; ; ; ;  [1]
  1. Department of Electrical and Computer Engineering, National University of Singapore, 117576 (Singapore)
Publication Date:
OSTI Identifier:
22350907
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CURRENTS; DIFFUSION; FERROMAGNETIC RESONANCE; IRON ALLOYS; LAYERS; NICKEL ALLOYS; PLATINUM; SPIN; TEMPERATURE RANGE 0273-0400 K; THICKNESS