3–28 Sept 2012
Nordita
Europe/Stockholm timezone

Optical transitions of excitons in a quantum well with Rashba spin-orbit coupling

20 Sept 2012, 17:00
30m
132:028 (Nordita)

132:028

Nordita

Speaker

Vadim Kovalev

Description

Interband and intraband optical transitions in a quantum well (QW) with structure inversion asymmetry (SIA) is theoretically studied. We pay main attention to the effect of simultaneously accounting for Coulomb interaction between electrons and holes created by the light and their spin-orbit (SO) coupling due to SIA of the QW. Such a spin-orbit interaction is referred in the literature as a Rashba spin-orbit term. We found the probability transitions both for light exciton and heavy exciton. It is shown that their behavior under the influence of the light is different due to the distinction of Rashba spin-orbit Hamiltonians of heavy and light holes. We also found that Rashba SO coupling strongly modifies the selection rules for intraband transitions .

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