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arXiv · 0811.4327

Spin currents in diluted magnetic semiconductors (extended version)

S. D. Ganichev·S. A. Tarasenko·V. V. Bel'kov·P. Olbrich·W. Eder·D. R. Yakovlev·V. Kolkovsky·W. Zaleszczyk·G. Karczewski·T. Wojtowicz·D. Weiss
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Abstract

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.

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S. D. Ganichev, S. A. Tarasenko, V. V. Bel'kov, P. Olbrich, W. Eder, D. R. Yakovlev, V. Kolkovsky, W. Zaleszczyk, G. Karczewski, T. Wojtowicz, D. Weiss. 2009-03-02. Spin currents in diluted magnetic semiconductors (extended version). https://doi.org/10.1103/physrevlett.102.156602

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