Optical Absorption Spectra of Bipolarons
Strongly Correlated Electrons
2009-10-31 v2
Abstract
The absorption of large bipolarons is investigated using the path-integral method. The response of a bipolaron to an external electromagnetic field is derived in the framework of the memory-function approach. The bipolaron optical absorption spectrum consists of a series of relatively narrow peaks. The peculiarities of the bipolaron optical absorption as a function of the frequency of the electromagnetic field may be attributed to the transitions involving relaxed excited states and scattering states of a bipolaron.
Cite
@article{arxiv.cond-mat/0004452,
title = {Optical Absorption Spectra of Bipolarons},
author = {J. T. Devreese and S. N. Klimin and V. M. Fomin},
journal= {arXiv preprint arXiv:cond-mat/0004452},
year = {2009}
}
Comments
14 pages, 3 figures, E-mail addresses: devreese@uia.ua.ac.be, fomin@uia.ua.ac.be; to be published in Phys. Rev. B