Monday, June 24, 2013

1306.5012 (Mathias Weiler et al.)

Experimental test of the spin mixing interface conductivity concept    [PDF]

Mathias Weiler, Matthias Althammer, Michael Schreier, Johannes Lotze, Matthias Pernpeintner, Sibylle Meyer, Hans Huebl, Rudolf Gross, Akashdeep Kamra, Jiang Xiao, Yan-Ting Chen, HuJun Jiao, Gerrit E. W. Bauer, Sebastian T. B. Goennenwein
We perform a quantitative, comparative study of the spin pumping, spin Seebeck and spin Hall magnetoresistance effects, all detected via the inverse spin Hall effect in a series of over 20 yttrium iron garnet/Pt samples. Our experimental results fully support present, exclusively spin current-based, theoretical models using a single set of plausible parameters for spin mixing conductance, spin Hall angle and spin diffusion length. Our findings establish the purely spintronic nature of the aforementioned effects and provide a quantitative description in particular of the spin Seebeck effect.
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