Polaron contributions to the biexciton binding energies in self-assembled quantum dots

Details Polaron contributions to the biexciton binding energies in self-assembled quantum dots Polaron contributions to the biexciton binding energies in self-assembled quantum dots

2010-09-20

arxiv.org/abs/1009.3860v2

Phys. Rev. B 83, 033303 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pqges, 2 color figures; moderately modified version

Scientific paper

10.1103/PhysRevB.83.033303

The contribution to the biexciton binding energy in quantum dots resulting from the interaction with longitudinal optical phonons is estimated by performing the configuration--interaction calculation of the few-particle states in a simple model of the confining potential and including the phonon corrections by means of a perturbation theory. It is found that the polaron contribution tends to compensate the Coulomb-related biexciton shift (binding energy) and reduces its value by several to even 30%, depending on the material parameters of the system.

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