Exciton Storage in a Nanoscale Aharonov-Bohm Ring with Electric Field Tuning
Abstract
We study analytically the optical properties of a simple model for an electron-hole pair on a ring subjected to perpendicular magnetic flux and in-plane electric field. We show how to tune this excitonic system from optically active to optically dark as a function of these external fields. Our results offer a simple mechanism for exciton storage and readout.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2009
- DOI:
- 10.1103/PhysRevLett.102.096405
- arXiv:
- arXiv:0809.3863
- Bibcode:
- 2009PhRvL.102i6405F
- Keywords:
-
- 71.35.Cc;
- 03.65.Ge;
- Intrinsic properties of excitons;
- optical absorption spectra;
- Solutions of wave equations: bound states;
- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect
- E-Print:
- 5 pages, 5 figures