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R. Warburton

Publications and source records attributed to R. Warburton.

2 recordsLinked to original sources
arXiv2001

Magnetoexcitons in quantum-ring structures: a novel magnetic interference effect

A novel magnetic interference effect is proposed for a neutral, but polarizable exciton in a quantum ring with a finite width. The magnetic interference effect originates from the nonzero dipole moment in the exciton. The ground state of exciton acquires a nonzero angular momentum with increasing normal magnetic field. This leads to the suppression of the photoluminescence in defined windows of the magnetic field.

cond-mat.mes-hall↗
arXiv2001

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

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.

cond-mat.mes-hall↗