Bose-Einstein condensate of two-dimensional excitons in a ring: Necklace-like modulation of order parameter

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dc.creatorYang, S. -R. Eric
dc.creatorPark, Q-Han
dc.creatorYeo, J.
dc.date2003-12-15
dc.date.accessioned2026-07-07T02:55:24Z
dc.date.available2026-07-07T02:55:24Z
dc.descriptionWe have studied theoretically the Bose-Einstein condensation (BEC) of two-dimensional excitons in a ring with small random width variation. We derive a nonlinear Gross-Pitaevkii equation (GPE) for such a condensate. Our numerical solution of the ground state of the GPE displays a necklace-like structure in the presence of small random variation of ring width. This is a consequence of the interplay between random potential and the nonlinear repulsive term of the GPE. Our result suggests that the formation of ring and necklace-like structures observed recently in the photoluminescence of quantum wells may be stable even in the BEC phase.
dc.identifierhttps://arxiv.org/abs/cond-mat/0312354
dc.identifierhttp://arxiv.org/abs/cond-mat/0312354
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22929
dc.subjectStrongly Correlated Electrons
dc.titleBose-Einstein condensate of two-dimensional excitons in a ring: Necklace-like modulation of order parameter
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