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arXiv · 1210.5230

Enhanced Inverse Spin-Hall Effect in Ultrathin Ferromagnetic/Normal Metal Bilayers

T. D. Skinner·H. Kurebayashi·D. Fang·D. Heiss·A. C. Irvine·A. T. Hindmarch·M. Wang·A. W. Rushforth·A. J. Ferguson
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Abstract

We measure electrically detected ferromagnetic resonance in microdevices patterned from ultra-thin Co/Pt bilayers. Spin pumping and rectification voltages are observed and distinguished via their angular dependence. The spin-pumping voltage shows an unexpected increase as the cobalt thickness is reduced below 2 nm. This enhancement allows more efficient conversion of spin to charge current and motivates a theory modelling the dependence of impurity scattering on surface roughness.

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T. D. Skinner, H. Kurebayashi, D. Fang, D. Heiss, A. C. Irvine, A. T. Hindmarch, M. Wang, A. W. Rushforth, A. J. Ferguson. 2012-10-18. Enhanced Inverse Spin-Hall Effect in Ultrathin Ferromagnetic/Normal Metal Bilayers. https://doi.org/10.1063/1.4792693

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