Recombination of many-particle states in InAs self-organized quantum dots
Strong many-body effects have been observed in the time-resolved photoluminescence spectroscopy of self-organized InAs/GaAs quantum dots. Our results show that the effects generate a considerable bandgap renormalization, being 28 meV at a dot occupancy of 20 electron-hole pairs for the lowest transi...
| Main Authors: | , , , , , |
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| Format: | Conference item |
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2001
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| _version_ | 1826265998131462144 |
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| author | Yuan, Z Foo, E Ryan, J Mowbray, D Skolnick, MS Hopkinson, M |
| author_facet | Yuan, Z Foo, E Ryan, J Mowbray, D Skolnick, MS Hopkinson, M |
| author_sort | Yuan, Z |
| collection | OXFORD |
| description | Strong many-body effects have been observed in the time-resolved photoluminescence spectroscopy of self-organized InAs/GaAs quantum dots. Our results show that the effects generate a considerable bandgap renormalization, being 28 meV at a dot occupancy of 20 electron-hole pairs for the lowest transition. Tt is also found that many-particle state scattering gives rise to a large homogeneous broadening of the photoluminescence peak, from which we estimate the intradot relaxation time to be 300 B. The fast intradot relaxation is supported by time-resolved measurements with direct excitation. |
| first_indexed | 2024-03-06T20:32:18Z |
| format | Conference item |
| id | oxford-uuid:3172de93-d1e6-441c-952e-4639c6c0a3a6 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T20:32:18Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:3172de93-d1e6-441c-952e-4639c6c0a3a62022-03-26T13:08:05ZRecombination of many-particle states in InAs self-organized quantum dotsConference itemhttp://purl.org/coar/resource_type/c_5794uuid:3172de93-d1e6-441c-952e-4639c6c0a3a6Symplectic Elements at Oxford2001Yuan, ZFoo, ERyan, JMowbray, DSkolnick, MSHopkinson, MStrong many-body effects have been observed in the time-resolved photoluminescence spectroscopy of self-organized InAs/GaAs quantum dots. Our results show that the effects generate a considerable bandgap renormalization, being 28 meV at a dot occupancy of 20 electron-hole pairs for the lowest transition. Tt is also found that many-particle state scattering gives rise to a large homogeneous broadening of the photoluminescence peak, from which we estimate the intradot relaxation time to be 300 B. The fast intradot relaxation is supported by time-resolved measurements with direct excitation. |
| spellingShingle | Yuan, Z Foo, E Ryan, J Mowbray, D Skolnick, MS Hopkinson, M Recombination of many-particle states in InAs self-organized quantum dots |
| title | Recombination of many-particle states in InAs self-organized quantum dots |
| title_full | Recombination of many-particle states in InAs self-organized quantum dots |
| title_fullStr | Recombination of many-particle states in InAs self-organized quantum dots |
| title_full_unstemmed | Recombination of many-particle states in InAs self-organized quantum dots |
| title_short | Recombination of many-particle states in InAs self-organized quantum dots |
| title_sort | recombination of many particle states in inas self organized quantum dots |
| work_keys_str_mv | AT yuanz recombinationofmanyparticlestatesininasselforganizedquantumdots AT fooe recombinationofmanyparticlestatesininasselforganizedquantumdots AT ryanj recombinationofmanyparticlestatesininasselforganizedquantumdots AT mowbrayd recombinationofmanyparticlestatesininasselforganizedquantumdots AT skolnickms recombinationofmanyparticlestatesininasselforganizedquantumdots AT hopkinsonm recombinationofmanyparticlestatesininasselforganizedquantumdots |