Coulomb effects in semiconductor quantum dots

Details Coulomb effects in semiconductor quantum dots Coulomb effects in semiconductor quantum dots

2004-06-11

arxiv.org/abs/cond-mat/0406273v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 2 figures

Scientific paper

10.1140/epjb/e2004-00375-6

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.

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