Eur. Phys. J. B 42, 231-237 (2004)
https://doi.org/10.1140/epjb/e2004-00375-6

Coulomb effects in semiconductor quantum dots

¹ Institute for Theoretical Physics, University Bremen, PO Box 330 440, 28334 Bremen, Germany
² National Institute of Materials Physics, PO Box MG-7, Bucharest-Magurele, Romania

Corresponding author: ^a nbaer@itp.uni-bremen.de

Received: 8 June 2004
Published online: 14 December 2004

Abstract

Coulomb correlations in the optical spectra of semiconductor quantum dots are investigated using a full-diagonalization approach. The resulting multi-exciton spectra are discussed in terms of the symmetry of the involved states. Characteristic features of the spectra like the nearly equidistantly spaced s-shell emission lines and the approximately constant p-shell transition energies are explained using simplified Hamiltonians that are derived taking into account the relative importance of various interaction contributions. Comparisons with previous results in the literature and their interpretation are made.