Excited exciton and biexciton localised states in a single quantum ring

Title
Excited exciton and biexciton localised states in a single quantum ring
Authors
H. D. KimK. KyhmR. A. TaylorA. A. L. NicoletM. PotemskiG. NoguesK. C. Je이은혜송진동
Keywords
GaAs; nano ring; exciton; biexciton
Issue Date
2013-10
Publisher
Applied physics letters
Citation
VOL 103, NO 17, 173106-1-173106-4
Abstract
We observe excited exciton and biexciton states of localised excitons in an anisotropic quantum ring, where large polarisation asymmetry supports the presence of a crescent-like localised structure. We also find that saturation of the localised ground state exciton with increasing excitation can be attributed to relatively fast dissociation of biexcitons (~430 ps) compared to slow relaxation from the excited state to the ground state (~1000 ps). As no significant excitonic Aharonov-Bohm oscillations occur up to 14 T, we conclude that phase coherence around the rim is inhibited as a consequence of height anisotropy in the quantum ring.
URI
http://pubs.kist.re.kr/handle/201004/46625
ISSN
00036951
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE