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Exciton transfer in asymmetric double quantum wells: the one-LO phonon process

Michl, F. C. ; Winkler, R. ; Rössler, Ulrich
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Date of publication of this fulltext: 05 Aug 2009 13:28


Abstract

We propose a novel mechanism for the transfer of excitons as an entity through barriers in quantum well structures, namely by the emission of a single longitudinal optical (LO) phonon. The process arises from a combination of the Fröhlich coupling of electrons and holes to the LO phonons and the admixture of different subband states to the wave function of the excitons due to the Coulomb ...

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