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

Research output: Contribution to journalArticle

58 Scopus citations

Abstract

The coherent optical injection and temporal decay of spin and charge currents in semiconductor heterostructures is described microscopically, including excitonic effects, many-body Coulomb correlations, and the carrier LO-phonon coupling on the second-order Born-Markov level, as well as nonperturbative light-field-induced intraband and interband excitations. A nonmonotonic 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 Coulomb scattering.

Original languageEnglish (US)
Article number086606
JournalPhysical review letters
Volume95
Issue number8
DOIs
StatePublished - Aug 19 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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