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arXiv · 1009.3177

Spin polarized electric currents in semiconductor heterostructures induced by microwave radiation

C. Drexler·V. V. Bel'kov·B. Ashkinadze·P. Olbrich·C. Zoth·V. Lechner·Ya. V. Terent'ev·D. R. Yakovlev·G. Karczewski·T. Wojtowicz·D. Schuh·W. Wegscheider·S. D. Ganichev
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Abstract

We report on microwave (mw) radiation induced electric currents in (Cd,Mn)Te/(Cd,Mg)Te and InAs/(In,Ga)As quantum wells subjected to an external in-plane magnetic field. The current generation is attributed to the spin-dependent energy relaxation of electrons heated by mw radiation. The relaxation produces equal and oppositely directed electron flows in the spin-up and spin-down subbands yielding a pure spin current. The Zeeman splitting of the subbands in the magnetic field leads to the conversion of the spin flow into a spin-polarized electric current.

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C. Drexler, V. V. Bel'kov, B. Ashkinadze, P. Olbrich, C. Zoth, V. Lechner, Ya. V. Terent'ev, D. R. Yakovlev, G. Karczewski, T. Wojtowicz, D. Schuh, W. Wegscheider, S. D. Ganichev. 2010-09-16. Spin polarized electric currents in semiconductor heterostructures induced by microwave radiation. https://doi.org/10.1063/1.3507896

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