摘要
By using the exact diagonalization method,a system of three electrons confined in a parabolic quantumdot in zero magnetic field is studied.The ground-state electronic structures and orbital and spin angular momentatransitions as a function of the confined strength are investigated.We find that the confinement may cause accidentaldegeneracies between levels with different low-lying states and the inversion of the energy values.The present,resultsare useful to understanding the optical properties and internal electron-electron correlations of quantum dot materials.
By using the exact diagonalization method,a system of three electrons confined in a parabolic quantum dot in zero magnetic field is studied.The ground-state electronic structures and orbital and spin angular momenta transitions as a function of the confined strength are investigated.We find that the confinement may cause accidental degeneracies between levels with different low-lying states and the inversion of the energy values.The present,results are useful to understanding the optical properties and internal electron-electron correlations of quantum dot materials.
基金
The project supported by National Natural Science Foundation of China under Grant No.10475021
