Abstract
It is shown that additional contributions both to current-induced spin orientation and to the spin Hall effect arise in quantum wells due to the gyrotropy of the structures. Microscopically, they are related to the basic properties of gyrotropic systems, namely, to linearity in the wave vector terms in the matrix element of electron scattering and in the energy spectrum. Calculation shows that, in high-mobility structures, the contribution to the spin Hall current considered here can exceed the term originating from the Mott skew scattering.
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