Steinebach, Christoph and Schüller, Christian and Heitmann, Detlef
Single-particle-like states in few-electron quantum dots.
Physical Review B (PRB) 61 (23), pp. 15600-15603.
Other URL: http://link.aps.org/doi/10.1103/PhysRevB.61.15600
We investigate theoretically Raman spectra of few-electron quantum dots. Spectra obtained by an exact many-body treatment and by a time-dependent local-density approximation are compared. We show that single-particle-like excitations can be expected for systems with only six electrons. The energies of these excitations are close to the Kohn-Sham level spacings.