The trion as an exciton interacting with a carrier
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
The X trion is essentially an electron bound to an exciton. However, due to the composite nature of the exciton, there is no way to write an exciton-electron interaction potential. We can overcome this difficulty by using a commutation technique similar to the one we introduced for excitons interacting with excitons, which allows to take exactly into account the close-to-boson character of the excitons. From it, we can obtain the X trion creation operator in terms of exciton and electron. We can also derive the X trion ladder diagram between an exciton and an electron. These are the basic tools for future works on many-body effects involving trions.
Cite
@article{arxiv.cond-mat/0304108,
title = {The trion as an exciton interacting with a carrier},
author = {M. Combesccot and O. Betbeder-Matibet},
journal= {arXiv preprint arXiv:cond-mat/0304108},
year = {2007}
}