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Excitons in quantum-ring structures in a magnetic field: Optical properties and persistent currents

A. O. Govorov·A. V. Kalameitsev·R. Warburton·K. Karrai·S. E. Ulloa
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Abstract

We study theoretically the magnetic field effect on a neutral, but polarizable exciton confined in quantum-ring structures. For excitons with a nonzero dipole moment, a novel magnetic interference effect occurs: The ground state of an exciton confined in a finite-width quantum ring possesses a nonzero angular momentum with increasing normal magnetic field. This effect is accompanied by a suppression of the photoluminescence in well-defined magnetic-field intervals. The magnetic interference effect is calculated for type-II quantum dots and quantum rings.

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A. O. Govorov, A. V. Kalameitsev, R. Warburton, K. Karrai, S. E. Ulloa. 2001-11-01. Excitons in quantum-ring structures in a magnetic field: Optical properties and persistent currents. https://doi.org/10.1016/s1386-9477(01)00542-2

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