Asymmetry of localised states in a single quantum ring: Polarization dependence of excitons and biexcitons
We performed spectroscopic studies of a single GaAs quantum ring with an anisotropy in the rim height. The presence of an asymmetric localised state was suggested by the adiabatic potential. The asymmetry was investigated in terms of the polarization dependence of excitons and biexcitons, where a la...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1797064098015346688 |
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| author | Kim, H Kyhm, K Taylor, R Nogues, G Je, K Lee, E Song, J |
| author_facet | Kim, H Kyhm, K Taylor, R Nogues, G Je, K Lee, E Song, J |
| author_sort | Kim, H |
| collection | OXFORD |
| description | We performed spectroscopic studies of a single GaAs quantum ring with an anisotropy in the rim height. The presence of an asymmetric localised state was suggested by the adiabatic potential. The asymmetry was investigated in terms of the polarization dependence of excitons and biexcitons, where a large energy difference (∼ 0.8 meV) in the exciton emission energy for perpendicular polarizations was observed and the oscillator strengths were also compared using the photoluminescence decay rate. For perpendicular polarizations, the biexciton exhibits twice the energy difference seen for the exciton, a fact that may be attributed to a possible change in the selection rules for the lowered symmetry. © 2013 American Institute of Physics. |
| first_indexed | 2024-03-06T21:09:22Z |
| format | Journal article |
| id | oxford-uuid:3d9b56ac-38e8-4937-86bb-193a0120f72c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:09:22Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:3d9b56ac-38e8-4937-86bb-193a0120f72c2022-03-26T14:20:27ZAsymmetry of localised states in a single quantum ring: Polarization dependence of excitons and biexcitonsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3d9b56ac-38e8-4937-86bb-193a0120f72cEnglishSymplectic Elements at Oxford2013Kim, HKyhm, KTaylor, RNogues, GJe, KLee, ESong, JWe performed spectroscopic studies of a single GaAs quantum ring with an anisotropy in the rim height. The presence of an asymmetric localised state was suggested by the adiabatic potential. The asymmetry was investigated in terms of the polarization dependence of excitons and biexcitons, where a large energy difference (∼ 0.8 meV) in the exciton emission energy for perpendicular polarizations was observed and the oscillator strengths were also compared using the photoluminescence decay rate. For perpendicular polarizations, the biexciton exhibits twice the energy difference seen for the exciton, a fact that may be attributed to a possible change in the selection rules for the lowered symmetry. © 2013 American Institute of Physics. |
| spellingShingle | Kim, H Kyhm, K Taylor, R Nogues, G Je, K Lee, E Song, J Asymmetry of localised states in a single quantum ring: Polarization dependence of excitons and biexcitons |
| title | Asymmetry of localised states in a single quantum ring: Polarization dependence of excitons and biexcitons |
| title_full | Asymmetry of localised states in a single quantum ring: Polarization dependence of excitons and biexcitons |
| title_fullStr | Asymmetry of localised states in a single quantum ring: Polarization dependence of excitons and biexcitons |
| title_full_unstemmed | Asymmetry of localised states in a single quantum ring: Polarization dependence of excitons and biexcitons |
| title_short | Asymmetry of localised states in a single quantum ring: Polarization dependence of excitons and biexcitons |
| title_sort | asymmetry of localised states in a single quantum ring polarization dependence of excitons and biexcitons |
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