Abstract
In 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.
Original language | English |
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Article number | 425224 |
Journal | Journal of Physics Condensed Matter |
Volume | 20 |
Issue number | 42 |
DOIs | |
Publication status | Published - 2008 Oct 22 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics