Exact-Diagonalization Studies of Inelastic Light Scattering in Self-Assembled Quantum Dots

Details Exact-Diagonalization Studies of Inelastic Light Scattering in Self-Assembled Quantum Dots Exact-Diagonalization Studies of Inelastic Light Scattering in Self-Assembled Quantum Dots

2008-12-19

arxiv.org/abs/0812.3896v1

Phys. Rev. B 79, 195318 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 11 figures

Scientific paper

We report exact diagonalization studies of inelastic light scattering in few-electron quantum dots under the strong confinement regime characteristic of self-assembled dots. We apply the orthodox (second-order) theory for scattering due to electronic excitations, leaving for the future the consideration of higher-order effects in the formalism (phonons, for example), which seem relevant in the theoretical description of available experiments. Our numerical results stress the dominance of monopole peaks in Raman spectra and the breakdown of selection rules in open-shell dots. The dependence of these spectra on the number of electrons in the dot and the incident photon energy is explicitly shown. Qualitative comparisons are made with recent experimental results.

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