Citation
Ahmad Kamarudin, Mazliana and Hayne, Manus and Young, Robert J. and Zhuang, Qian Dong and Ben, Teresa and Molina, Sergio I.
(2011)
Tuning the properties of exciton complexes in self-assembled GaSb/GaAs quantum rings.
Physical Review B: Condensed Matter and Materials Physics, 83 (11).
pp. 1-6.
ISSN 1098-0121; ESSN:1550-235X
Abstract
Type-II self-assembled GaSb/GaAs nanostructures have been grown by molecular-beam epitaxy and studied by atomic-force microscopy, transmission electron microscopy, and power-dependent magnetophotoluminescence. Nanostructures on the sample surface are found to be entirely dotlike, while capped nanostructures are predominantly ringlike. Moreover, an in situ anneal process applied after thinly capping the dots is shown to enhance the severity of the rings and relax the strain in the matrix in the proximity of the GaSb, resulting in a change to the spatial configuration of the exciton complexes and their optical properties.
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Official URL or Download Paper: http://dx.doi.org/10.1103/PhysRevB.83.115311
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Additional Metadata
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science |
| DOI Number: | https://doi.org/10.1103/PhysRevB.83.115311 |
| Publisher: | American Physical Society |
| Keywords: | GaSb/GaAs; Quantum dots; Quantum rings |
| Depositing User: | Nur Farahin Ramli |
| Date Deposited: | 29 Aug 2013 08:00 |
| Last Modified: | 10 Feb 2016 06:17 |
| URI: | http://psasir.upm.edu.my/id/eprint/24802 |
| Statistic Details: | View Download Statistic |
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