Effect of many-body quantum fluctuations on matrix Berry phases of a two-dimensional n-type semiconductor quantum dot

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dc.creatorKim, S. C.
dc.creatorKim, Y. J.
dc.creatorPark, P. S.
dc.creatorHwang, N. Y.
dc.creatorYang, S. -R. Eric
dc.date2008-10-02
dc.date.accessioned2026-07-07T10:07:01Z
dc.date.available2026-07-07T10:07:01Z
dc.descriptionIn the presence of spin-orbit coupling and inversion symmetry of the lateral confinement potential a single electron does not exhibit matrix Berry phases in quasi-two-dimensional semiconductor quantum dots. In such a system we investigate whether many-body correlation effects can lead to finite matrix Berry phases. We find that the transformation properties of many-electron wavefunctions under two-dimensional inversion operation do not allow finite matrix Berry phases. This effect is exact and is independent of the form of electron-electron interactions. On the other hand, quasi-two-dimensional semiconductor quantum dots with lateral confinement potential without inversion symmetry can have finite matrix Berry phases. We find that many-body quantum fluctuations can change matrix Berry phases significantly in such systems.
dc.identifierhttps://arxiv.org/abs/0810.0333
dc.identifierhttp://arxiv.org/abs/0810.0333
dc.identifierJournal of Physics:Condensed Matter 20, 425224 (2008)
dc.identifierdoi:10.1088/0953-8984/20/42/425224
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/170490
dc.subjectMesoscale and Nanoscale Physics
dc.titleEffect of many-body quantum fluctuations on matrix Berry phases of a two-dimensional n-type semiconductor quantum dot
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