Biexcitons in artificial molecules with in-plane magnetic field |
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Authors: | Devis Bellucci Filippo Troiani Guido Goldoni Elisa Molinari |
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Affiliation: | INFM - National Research Center on nanoStructures and bioSystems at Surfaces (S3), Dipartimento di Fisica, Università degli Studi di Modena e Reggio Emilia, Via Campi 213/A, 41100 Modena, Italy |
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Abstract: | We theoretically investigate the effect of a magnetic field perpendicular to the tunneling direction on the ground-state properties of biexcitons in coupled quantum dots. The single-particle states are computed by numerically solving the 3D Scrödinger equation. The biexciton states are obtained by means of a configuration-interaction approach, which fully accounts for the intra- and inter-dot Coulomb correlations. We show that the biexciton ground state undergoes non-trivial transitions as a function of the applied magnetic field, which can be traced back to unexpected carrier localizations. |
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Keywords: | Coupled quantum dots Coulomb correlations Magnetic fields |
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