1212.3089 (Mariko Koike et al.)

Dynamical Spin Injection into p-type Germanium at Room Temperature    [PDF]

Mariko Koike, Eiji Shikoh, Yuichiro Ando, Teruya Shinjo, Shinya Yamada, Kohei Hamaya, Masashi Shiraishi

We demonstrate dynamical spin injection into p-type germanium (Ge) at room temperature (RT) using spin pumping. The generated pure spin current is converted to a charge current by the inverse spin-Hall effect (ISHE) arising in the p-type Ge sample. A clear electromotive force due to the ISHE is detected at RT. The spin-Hall angle for p-type Ge is estimated to be {\theta}SHE = 2.6x10-3 at RT, which is much larger than that for p-type Si.

View original: http://arxiv.org/abs/1212.3089