| Téléchargement | - Voir le manuscrit accepté : Atomistic tight-binding theory of multiexciton complexes in a self-assembled InAs quantum dot (PDF, 735 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevB.81.085301 |
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| Auteur | Rechercher : Zieliński, M.1; Rechercher : Korkusiński, M.1; Rechercher : Hawrylak, P.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut des sciences des microstructures du CNRC
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| Format | Texte, Article |
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| Résumé | We present atomistic tight-binding theory of electronic structure and optical properties of InAs/GaAs selfassembled quantum dots. The tight-binding model includes zincblende symmetry, faceting, and sp3d5s* atomic orbitals accounting for interband and intervalley couplings. The equilibrium positions of atoms are calculated using valence force field method and modification of the tight-binding Hamiltonian due to strain is accounted for using Harrison’s law. The electronic and optical properties of multiexciton complexes are then determined by diagonalizing the many-body Hamiltonian for interacting electrons and holes using the configurationinteraction approach. The calculations of strain distribution approach 108 atoms while the electron and valence hole single-particle states are calculated by diagonalization of the Hamiltonian matrix with size on the order of 107. The dependence of predicted electronic and optical properties on InAs/GaAs valence-band offset and InAs absolute valence-band deformation potentials are described. The reliability of the atomistic calculations is assessed by comparison with results obtained from the effective bond orbital model and empirical pseudopotentials method. |
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| Date de publication | 2010-02-01 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 17521912 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | f97518d6-a270-4e62-96d0-93c151dba910 |
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| Enregistrement créé | 2011-03-29 |
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| Enregistrement modifié | 2020-04-17 |
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