  In this study, the temperature dependence of the spin Hall angle of palladium
(Pd) was experimentally investigated by spin pumping. A Ni80Fe20/Pd bilayer
thin film was prepared, and a pure spin current was dynamically injected into
the Pd layer. This caused the conversion of the spin current to a charge
current owing to the inverse spin Hall effect. It was found that the spin Hall
angle varies as a function of temperature, whereby the value of the spin Hall
angle increases to ca. 0.02 at 123 K.
