Ga. Narvaez et P. Hawrylak, Effects of electron-electron interactions on excitonic absorption in charged self-assembled quantum dots, PHYS REV B, 61(20), 2000, pp. 13753-13762
We investigate theoretically the effects of electron-electron interactions
on excitonic absorption in charged, lens-shaped, self-assembled quantum dot
s (SAD). The electronic shells of SAD are filled with N electrons according
to generalized Hund's rules. In absorption, an exciton is added to the ele
ctronic system. The electronic part of the exciton couples in a nontrivial
way to resonant electronic configurations of SAD through direct and exchang
e interaction while the mobile valence hole contributes through the entangl
ement of many-electron configurations. The two processes result in an excit
onic absorption spectrum that reflects the filling of electronic shells. Th
ese processes are illustrated by detailed calculations of absorption spectr
a for few-electron complexes.