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Optical observation of single-carrier charging in type-II quantum ring ensembles
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Young, R. J., Smakman, E. P., Sánchez, Ana M., Hodgson, P., Koenraad, P. M. and Hayne, M. (2012) Optical observation of single-carrier charging in type-II quantum ring ensembles. Applied Physics Letters, Vol. 100 (No. 8). 082104. doi:10.1063/1.3688037 ISSN 00036951.
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Official URL: http://dx.doi.org/10.1063/1.3688037
Abstract
A high-purity GaSb/GaAs quantum ring system is introduced that provides both strong hole-confinement in the GaSb ring and electron confinement in its GaAs core. The latter is responsible for a reduced inhomogeous linewidth measured in photoluminescence, in comparison to the previous measurements made on nanostructures with differing morphology in this material system. This allows the resolution of multiple peaks in the photoluminescence due to discrete charging with holes, revealing the mechanism responsible for the excitation-power-induced blueshift.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Applied Physics Letters | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 00036951 | ||||
Official Date: | 2012 | ||||
Dates: |
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Volume: | Vol. 100 | ||||
Number: | No. 8 | ||||
Page Range: | 082104 | ||||
DOI: | 10.1063/1.3688037 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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