Microscopic analysis of the coherent optical generation and the decay of charge and spin currents in semiconductor heterostructures

Huynh Thanh Duc; T. Meier; S. W. Koch

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Microscopic analysis of the coherent optical generation and the decay of charge and spin currents in semiconductor heterostructures

Huynh Thanh Duc·T. Meier·S. W. Koch

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Abstract

The coherent optical injection and temporal decay of spin and charge currents in semiconductor heterostructures is described microscopically, including excitonic effects, carrier LO-phonon and carrier-carrier scattering, as well as nonperturbative light-field-induced intraband and interband excitations. A nonmonotonous dependence of the currents on the intensities of the laser beams is predicted. Enhanced damping of the spin current relative to the charge current is obtained as a consequence of spin-dependent Coulomb scattering.

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Huynh Thanh Duc, T. Meier, S. W. Koch. 2005-02-23. Microscopic analysis of the coherent optical generation and the decay of charge and spin currents in semiconductor heterostructures. https://arxiv.org/abs/cond-mat/0502557

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