Coulomb effects in semiconductor quantum dots
Norman Baer, Paul Gartner, and Frank Jahnke
TL;DR
This paper investigates Coulomb correlations in semiconductor quantum dots using full-diagonalization, explaining spectral features with simplified Hamiltonians and comparing results with existing literature.
Contribution
It provides a detailed analysis of Coulomb effects in quantum dot spectra with a full-diagonalization approach and simplified models for interpretation.
Findings
Multi-exciton spectra characterized by nearly equidistant s-shell lines
Constant p-shell transition energies explained by simplified Hamiltonians
Comparison with previous studies clarifies spectral features
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.
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