Abstract
By using the exact numerical diagonalization scheme, we study the low-lying spectrum of a two-electron quantum dot with a confined parabolic potential in the presence of an on-center Coulomb impurity. The orbital angular momentum L and/or spin angular momentum S transitions induced by the magnetic field are reported. Furthermore, the effect of different electron–LO-phonon coupling strengths on the energy spectrum can be predicted.
- Received 10 September 1999
DOI:https://doi.org/10.1103/PhysRevB.61.10376
©2000 American Physical Society