Determination of intrinsic spin Hall angle in Pt

Abstract

The spin Hall angle in Pt is evaluated in Pt/NiFe bilayers by spin torque ferromagnetic resonance (ST-FMR) 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 13 - 300 K.

References in corpus (5)

• Evolution of the spin Hall effect in Pt nanowires: Size and temperature effects
• Spin Hall Angle Quantification from Spin Pumping and Microwave Photoresistance
• Experimental Verification of Comparability between Spin-Orbit and Spin-Diffusion Lengths
• Current-induced motion of a transverse magnetic domain wall in the presence of spin Hall effect
• Rectification of radio frequency current in ferromagnetic nanowire

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