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 | Year: 2015
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.