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

doi:10.1063/1.4792693

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

Mesoscale and Nanoscale Physics 2013-04-22 v1

Authors: 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.

Keywords

inverse spin-Hall effect ultrathin bilayers ferromagnetic resonance spin pumping rectification voltage surface roughness impurity scattering Co/Pt bilayers

Cite

@article{arxiv.1210.5230,
  title  = {Enhanced Inverse Spin-Hall Effect in Ultrathin Ferromagnetic/Normal Metal Bilayers},
  author = {T. D. Skinner and H. Kurebayashi and D. Fang and D. Heiss and A. C. Irvine and A. T. Hindmarch and M. Wang and A. W. Rushforth and A. J. Ferguson},
  journal= {arXiv preprint arXiv:1210.5230},
  year   = {2013}
}

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

Abstract

Keywords

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