| Téléchargement | - Voir le manuscrit accepté : Theory of fine structure of correlated exciton states in self-assembled semiconductor quantum dots in a magnetic field (PDF, 680 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevB.84.245314 |
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| Auteur | Rechercher : Trojnar, Anna H.1; Rechercher : Kadantsev, Eugene S.1; Rechercher : Korkusinski, Marek1; Rechercher : Hawrylak, Pawel1 |
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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 | A theory of the fine structure of correlated exciton states in self-assembled parabolic semiconductor quantum dots in a magnetic field perpendicular to the quantum dot plane is presented. The correlated exciton wave function is expanded in configurations consisting of products of electron and heavy-hole 2D harmonic oscillator states (HO) in a magnetic field and the electron spin Sz = ±1/2 and a heavy-hole spin τz = ±3/2 states. Analytical expressions for the short- and long-range electron-hole exchange Coulomb interactionmatrix elements are derived in the HO and spin basis for arbitrary magnetic field. This allows the incorporation of short- and long-range electron-hole exchange, direct electron-hole interaction, and quantum dot anisotropy in the exact diagonalization of the exciton Hamiltonian. The fine structure of ground and excited correlated exciton states as a function of a number of confined shells, quantum dot anisotropy, and magnetic field is obtained using exact diagonalization of the many-body Hamiltonian. The effects of correlations are shown to significantly affect the energy splitting of the two bright exciton states. |
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| Date de publication | 2011-12-19 |
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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 | 19335197 |
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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 | 18b7364c-7741-4cc4-96fe-fa566aec7933 |
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| Enregistrement créé | 2012-02-29 |
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| Enregistrement modifié | 2020-04-21 |
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