Polarization and Aharonov-Bohm oscillations in quantum-ring magnetoexcitons

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dc.creatorda Silva, Luis G. Dias
dc.creatorUlloa, Sergio E.
dc.creatorShahbazyan, Tigran V.
dc.date2005-04-21
dc.date2005-08-03
dc.date.accessioned2026-07-07T12:33:06Z
dc.date.available2026-07-07T12:33:06Z
dc.descriptionWe study interaction and radial polarization effects on the the absorption spectrum of neutral bound magnetoexcitons confined in quantum-ring structures. We show that the size and orientation of the exciton's dipole moment, as well as the interaction screening, play important roles in the Aharonov-Bohm oscillations. In particular, the excitonic absorption peaks display A-B oscillations both in position and amplitude for weak electron-hole interaction and large radial polarization. The presence of impurity scattering induces anticrossings in the exciton spectrum, leading to a modulation in the absorption strength. These properties could be used in experimental investigations of the effect in semiconductor quantum-ring structures.
dc.descriptionUpdated version, 6 pages, 4 figures. To appear in Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0504569
dc.identifierhttp://arxiv.org/abs/cond-mat/0504569
dc.identifierPhys. Rev. B 72 125327 (2005).
dc.identifierdoi:10.1103/PhysRevB.72.125327
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217010
dc.subjectMesoscale and Nanoscale Physics
dc.titlePolarization and Aharonov-Bohm oscillations in quantum-ring magnetoexcitons
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