ФТП, 2008, том 42, выпуск 8

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Thermal orientation of electron spins

S.A.Tarasenko

Ioffe Physicotechnical Institute, Russian Academy of Sciences,
194021 St. Petersburg, Russia

(Получена 6 февраля 2008 г. Принята к печати 11 февраля 2008 г.)

It is shown that the spin orientation of free electrons occurs in low-symmetry semiconductor structures if only the electron gas is driven out of thermal equilibrium with the crystal lattice. The proposed mechanism of such a thermal orientation of electron spins is based on spin dependence of the electron-phonon interaction which tends to restore equilibrium. The microscopic theory of the effect is developed here for asymmetric (110)-grown quantum wells where the electron gas heating leads to the spin orientation along the [110] axis in the quantum well plane.

PACS: 72.25.Rb, 73.63.Hs, 75.75.+a

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