Excitons in quantum-ring structures in a magnetic field: Optical properties and persistent currents
Mesoscale and Nanoscale Physics
2015-06-24 v1
Abstract
We study theoretically the magnetic field effect on a neutral, but polarizable exciton confined in quantum-ring structures. For excitons with a nonzero dipole moment, a novel magnetic interference effect occurs: The ground state of an exciton confined in a finite-width quantum ring possesses a nonzero angular momentum with increasing normal magnetic field. This effect is accompanied by a suppression of the photoluminescence in well-defined magnetic-field intervals. The magnetic interference effect is calculated for type-II quantum dots and quantum rings.
Cite
@article{arxiv.cond-mat/0111007,
title = {Excitons in quantum-ring structures in a magnetic field: Optical properties and persistent currents},
author = {A. O. Govorov and A. V. Kalameitsev and R. Warburton and K. Karrai and S. E. Ulloa},
journal= {arXiv preprint arXiv:cond-mat/0111007},
year = {2015}
}
Comments
10 pages, 2 figures, Proceed. MSS-10, 2001 (Physica E)