Two-dimensional charged magneto-excitons: Magnetic translations and localization
Mesoscale and Nanoscale Physics
2009-10-31 v1
Abstract
For composite complexes -- quasi-two-dimensional (2D) charged magneto-excitons X- -- we propose a new exact classification of states, which is based on magnetic translations. We consider implications of this symmetry for magneto-optical transitions. It is shown, in particular, that in a translationally-invariant system with a simple valence band, the ground triplet X- state is dark in interband transitions at finite magnetic fields B. This exact result calls for the re-interpretation of several previous theoretical studies. We consider the symmetry-breaking effects of spatial lateral confinement on internal transitions of charged complexes.
Keywords
Cite
@article{arxiv.cond-mat/9908406,
title = {Two-dimensional charged magneto-excitons: Magnetic translations and localization},
author = {A. B. Dzyubenko and A. Yu. Sivachenko},
journal= {arXiv preprint arXiv:cond-mat/9908406},
year = {2009}
}
Comments
Contribution to EP2DS-13, submitted to Physica E; 3 pages, one ps figure included