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Garching bei München, Germany

Schreier M.,Walther Meiinnodatabetaner Institute | Schreier M.,TU Munich | Bauer G.E.W.,Tohoku University | Bauer G.E.W.,Technical University of Delft | And 19 more authors.
Journal of Physics D: Applied Physics

We carried out a concerted effort to determine the absolute sign of the inverse spin Hall effect voltage generated by spin currents injected into a normal metal. We focus on yttrium iron garnet (YIG)|platinum bilayers at room temperature, generating spin currents by microwaves and temperature gradients. We find consistent results for different samples and measurement setups that agree with theory. We suggest a right-hand-rule to define a positive spin Hall angle corresponding to the voltage expected for the simple case of scattering of free electrons from repulsive Coulomb charges. © 2015 IOP Publishing Ltd. Source

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