Young, M.P., Woodhead, C.S. ![]() |
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Abstract
We present optical studies of individual and few GaSb quantum rings embedded in a GaAs matrix. Contrary to expectation for type-II confinement, we measure rich spectra containing sharp lines. These lines originate from excitonic recombination and are observed to have resolution-limited full-width at half maximum of 200 µeV. The detail provided by these measurements allows the characteristic type-II blueshift, observed with increasing excitation power, to be studied at the level of individual nanostructures. These findings are in agreement with hole-charging being the origin of the observed blueshift
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Publisher: | American Institute of Physics Publising LLC |
ISSN: | 2158-3226 |
Date of First Compliant Deposit: | 4 June 2021 |
Date of Acceptance: | 7 November 2014 |
Last Modified: | 05 May 2023 02:16 |
URI: | https://orca.cardiff.ac.uk/id/eprint/141245 |
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