Existence of Unexcited and Excited Biexcitons in Molecular Crystals

Details Existence of Unexcited and Excited Biexcitons in Molecular Crystals Existence of Unexcited and Excited Biexcitons in Molecular Crystals

2007-09-18

arxiv.org/abs/0709.2786v1

Physics

Atomic and Molecular Clusters

Scientific paper

The theory of four-body systems is revisited. It is illustrated that the theory provides a rigorous proof for the formation of ground state (unexcited) biexcitons in molecular crystals. The generalization of the theory predicts the possible existence of excited biexcitons in nature. In order to test the validity of the extended theory on computational level, a very elaborate computer code is constructed for the treatment of arbitrary four-body system with arbitrary electron/hole mass ratio and arbitrary exciton - exciton interaction (VXX). The results, for mass ratio = 1 and VXX is a pure Coulomb force, show that the test is successful. Realization of these conclusions on experimental level should open the door for wide industrial applications.

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