  A spin battery concept is applied for the dynamical generation of pure spin
current and spin transport in p-type silicon (p-Si). Ferromagnetic resonance
and effective s-d coupling in Ni80Fe20 results in spin accumulation at the
Ni80Fe20/p-Si interface, inducing spin injection and the generation of spin
current in the p-Si. The pure spin current is converted to a charge current by
the inverse spin Hall effect of Pd evaporated onto the p-Si. This approach
demonstrates the generation and transport of pure spin current in p-Si at room
temperature.
