Optical spectroscopy of a single Al0.36In0.64As/Al0.33Ga0.67As quantum dot- art. no. 075314

Citation
K. Hinzer et al., Optical spectroscopy of a single Al0.36In0.64As/Al0.33Ga0.67As quantum dot- art. no. 075314, PHYS REV B, 6307(7), 2001, pp. 5314
Citations number
39
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
0163-1829 → ACNP
Volume
6307
Issue
7
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010215)6307:7<5314:OSOASA>2.0.ZU;2-1
Abstract
We report results of interband spectroscopy of a single Al0.36In0.64As/Al0. 33Ga0.67As self-assembled quantum dot. The single dot spectroscopy has been carried out at low temperature as a function of the excitation power and m agnetic field up to 8 T. The emission spectra as a function of excitation p ower show two distinct groups of transitions that we associate with the rec ombination from ground and excited quantum dot levels with a spacing of sim ilar to 70 meV. The application of magnetic field allows us to identify the exciton emission as well as the emission from the biexciton, and charged e xciton complexes with binding energies of similar to5 meV. The binding ener gies compare favorably with results of calculations.