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Type: Artigo de periódico
Title: Effects of electron-electron interactions on excitonic absorption in charged self-assembled quantum dots
Author: Narvaez, GA
Hawrylak, P
Abstract: We investigate theoretically the effects of electron-electron interactions on excitonic absorption in charged, lens-shaped, self-assembled quantum dots (SAD). The electronic shells of SAD are filled with N electrons according to generalized Hund's rules. In absorption, an exciton is added to the electronic system. The electronic part of the exciton couples in a nontrivial way to resonant electronic configurations of SAD through direct and exchange interaction while the mobile valence hole contributes through the entanglement of many-electron configurations. The two processes result in an excitonic absorption spectrum that reflects the filling of electronic shells. These processes are illustrated by detailed calculations of absorption spectra for few-electron complexes.
Country: EUA
Editor: Amer Physical Soc
Citation: Physical Review B. Amer Physical Soc, v. 61, n. 20, n. 13753, n. 13762, 2000.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.61.13753
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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