We systematically measured the dc voltage $V_{\mathrm{ISH}}$ induced by spin pumping together with the inverse spin Hall effect in ferromagnet-platinum bilayer films. In all our samples, comprising ferromagnetic $3d$ transition metals, Heusler compounds, ferrite spinel oxides, and magnetic semiconductors, $V_{\mathrm{ISH}}$ invariably has the same polarity, and scales with the magnetization precession cone angle. These findings, together with the spin mixing conductance derived from the experimental data, quantitatively corroborate the present theoretical understanding of spin pumping in combination with the inverse spin Hall effect.

• Received 14 December 2010

DOI:https://doi.org/10.1103/PhysRevLett.107.046601