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- W2816480935 abstract "We calculate the excitonic optical absorption spectra of (In,Ga)As/GaAs self-assembled quantum dots by adopting an atomistic pseudopotential approach to the single-particle problem followed by a configuration-interaction approach to the many-body problem. We find three types of allowed transitions that would be naively expected to be forbidden. (i) Transitions that are parity forbidden in simple effective mass models with infinite confining wells (e.g. 1S-2S, 1P-2P) but are possible by finite band-offsets and orbital-mixing effects; (ii) light-hole--to--conduction transitions, enabled by the confinement of light-hole states; and (iii) transitions that show and enhanced intensity due to electron-hole configuration mixing with allowed transitions. We compare these predictions with results of 8-band k.p calculations as well as recent spectroscopic data. Transitions in (i) and (ii) explain recently observed satellites of the allowed P-P transitions." @default.
- W2816480935 created "2018-07-19" @default.
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- W2816480935 date "2006-01-25" @default.
- W2816480935 modified "2023-09-27" @default.
- W2816480935 title "Enhancement of nominally-forbidden interband optical transitions in quantum dots" @default.
- W2816480935 hasPublicationYear "2006" @default.
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