Abstract
We have investigated whether many-body effects can induce significant level fluctuations in a (Formula presented)-(Formula presented) quantum dot. The closed energy shell structures and relaxation of the Hartree-Fock (HF) potentials are found to play a significant role. The level degeneracy consistent with the rotational symmetry of the confining potential determines the structure of the energy shells. A closed shell state of a dot can give rise to large fluctuations. When a strong magnetic field is present the shell structure is absent and fluctuations are significantly reduced.
Original language | English |
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Pages (from-to) | 1720-1723 |
Number of pages | 4 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 61 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2000 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics