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Spin polarized electric currents in semiconductor heterostructures induced by microwave radiation

Drexler, Christoph ; Belkov, Vassilij ; Ashkinadze, B. ; Olbrich, Peter ; Zoth, Christina ; Lechner, Vera ; Terent'ev, Ya.V. ; Yakovlev, D.R. ; Karczewski, G. ; Wojtowicz, Tomasz ; Schuh, Dieter ; Wegscheider, Werner ; Ganichev, Sergey



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 ...

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