Publication
Title
Single neutral excitons confined in $AsBr_{3}$ **in situ** etched InGaAs quantum rings
Author
Abstract
 We observe the evolution of single self-assembled semiconductor quantum dots into quantum rings during AsBr3 in situ etching. The direct three-dimensional imaging of In(Ga)As nanostructures embedded in GaAs matrix is demonstrated by selective wet chemical etching combined with atomic force microscopy. Single neutral excitons confined in these quantum rings are studied by magneto-photoluminescence. Oscillations in the exciton radiative recombination energy and in the emission intensity are observed under an applied magnetic field. Further, we demonstrate that the period of the oscillations can be tuned by a gate potential that modifies the exciton confinement. The experimental results, combined with calculations, indicate that the exciton Aharonov-Bohm effect may account for the observed effects.
Language
English
Source (journal)
Journal of nanoelectronics and optoelectronics
Publication
2011
ISSN
1555-130X
Volume/pages
6:1(2011), p. 51-57
ISI
000290692200005
Full text (Publisher's DOI)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address
External links
 Web of Science
Record
 Identification Creation 15.07.2011 Last edited 08.08.2017 To cite this reference