Spin currents resulting in the zero-bias spin separation have been observed in unbiased diluted magnetic semiconductor structures (Cd,Mn)Te/(Cd,Mg)Te. The pure spin current generated due to the electron gas heating by terahertz radiation is converted into a net electric current by application of an external magnetic field. We demonstrate that polarization of the magnetic ion system enhances drastically the conversion due to the spin-dependent scattering by localized Mn(2+) ions and the giant Zeeman splitting.
@article{arxiv.0811.4327,
title = {Spin currents in diluted magnetic semiconductors (extended version)},
author = {S. D. Ganichev and S. A. Tarasenko and V. V. Bel'kov and P. Olbrich and W. Eder and D. R. Yakovlev and V. Kolkovsky and W. Zaleszczyk and G. Karczewski and T. Wojtowicz and D. Weiss},
journal= {arXiv preprint arXiv:0811.4327},
year = {2015}
}