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Self-consistent model of magnetoplasmons in quantum dots with nearly parabolic confinement potentials

Vidar Gudmundsson and Rolf R. Gerhardts
Phys. Rev. B 43, 12098(R) – Published 15 May 1991
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Abstract

We investigate the longitudinal collective oscillations of a two-dimensional interacting electron gas (2DEG) confined to a disk (quantum dot) in a perpendicular constant magnetic field. We show how the exact results known for a parabolically confined 2DEG change when the confining potential and the electron number are varied. Considering reasonable corrections to a parabolic confinement potential, we are able to explain all features of the far-infrared spectrum of quantum dots observed in recent experiments.

  • Received 14 February 1991

DOI:https://doi.org/10.1103/PhysRevB.43.12098

©1991 American Physical Society

Authors & Affiliations

Vidar Gudmundsson

  • Science Institute, University of Iceland, Dunhaga 3, IS-107 Reykjavik, Iceland

Rolf R. Gerhardts

  • Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-7000 Stuttgart 80, Federal Republic of Germany

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Vol. 43, Iss. 14 — 15 May 1991

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