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Phys Rev Lett. 2013 Oct 25;111(17):176601. Epub 2013 Oct 23.

Experimental test of the spin mixing interface conductivity concept.

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1
Walther-Mei├čner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany.

Abstract

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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