Spectroscopic structure of two interacting electrons in a quantum dot by the shiftedexpansion method
- 15 May 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 61 (19), 13026-13031
- https://doi.org/10.1103/physrevb.61.13026
Abstract
The shifted expansion method has been used to study the relative Hamiltonian of two interacting electrons confined in a quantum dot. The eigenenergy spectra are obtained for any arbitrary ratio of Coulomb to confinement energies. Interesting features of the quantum dot spectra, such as the energy-level crossings and the removal of the degeneracy, are explained. Comparisons show that our results are in very good agreement with recent published ones calculated by exact and WKB methods.
Keywords
This publication has 25 references indexed in Scilit:
- Maximum-Density Droplet and Charge Redistributions in Quantum Dots at High Magnetic FieldsPhysical Review Letters, 1999
- Shell Filling and Spin Effects in a Few Electron Quantum DotPhysical Review Letters, 1996
- Electrons in artificial atomsNature, 1996
- Spectroscopy of Quantum Levels in Charge-Tunable InGaAs Quantum DotsPhysical Review Letters, 1994
- Dynamic response of parabolically confined electron systemsSemiconductor Science and Technology, 1994
- Addition spectra of quantum dots in strong magnetic fieldsPhysical Review Letters, 1993
- N-electron ground state energies of a quantum dot in magnetic fieldPhysical Review Letters, 1993
- Coupling of quantum dots on GaAsPhysical Review Letters, 1990
- Nonlocal dynamic response and level crossings in quantum-dot structuresPhysical Review Letters, 1990
- Spectroscopy of electronic states in InSb quantum dotsPhysical Review Letters, 1989