Effects of Coulomb interactions on the splitting of luminescence lines

Details Effects of Coulomb interactions on the splitting of luminescence lines Effects of Coulomb interactions on the splitting of luminescence lines

2004-10-15

arxiv.org/abs/cond-mat/0410402v1

Physica E 27 (2005) 129 - 139

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Submitted for publication

Scientific paper

10.1016/j.physe.2004.10.015

We study the splitting between the right-hand and left-hand circularly polarized luminescence lines in a quantum dot under relatively weak confinement regime and resonant high-power excitation. When the dot is populated with an even number of electron-hole pairs (biexciton and higher excitations), the splitting measures basically the Zeeman energy. However, in the odd number of pairs case, we have, in addition to the Zeeman and Overhauser shifts, a contribution to the splitting coming from Coulomb interactions. This contribution is of the order of a few meV, and shows distinct signatures of shell-filling in the quantum dot.

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