Kowalik-Seidl, Katarzyna and Voegele, Xaver P. and Rimpfl, Bernhard N. and Schinner, Georg J. and Schuh, Dieter and Wegscheider, Werner and Holleitner, Alexander W. and Kotthaus, Joerg P. (2012) Tunable Photoemission from an Excitonic Antitrap. NANO LETTERS, 12 (1). pp. 326-330. ISSN 1530-6984,
Full text not available from this repository. (Request a copy)Abstract
We study the influence of lithographically defined, electrostatic trap configurations on the photon emission from dipolar excitons in coupled quantum wells. The emission is surprisingly enhanced for an excitonic antitrap compared to a trap configuration, an effect more pronounced for a trap with smaller diameter. We explain the observations by the interplay between the exciton formation process, the lateral charge-carrier dynamics, and the dipole dipole interactions between the excitons. Exploiting this interplay allows us to efficiently tune the excitonic emission energy with very small intensity variation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BOSE-EINSTEIN CONDENSATION; COUPLED QUANTUM-WELLS; DYNAMICS; STORAGE; TRAPS; Dipolar exciton; exciton trap; exciton antitrap; electro-optical modulator |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 May 2020 12:28 |
| Last Modified: | 25 May 2020 12:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/19619 |
Actions (login required)
 |
View Item |
