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.
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Research Article| October 17 2014
Determination of intrinsic spin Hall angle in Pt
Jae Hyun Kwon;
Yi Wang, Praveen Deorani, Xuepeng Qiu, Jae Hyun Kwon, Hyunsoo Yang; Determination of intrinsic spin Hall angle in Pt. Appl. Phys. Lett. 13 October 2014; 105 (15): 152412. https://doi.org/10.1063/1.4898593
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