Electron-lattice relaxation, and soliton structures and their interactions in polyenes
Condensed Matter
2009-10-31 v2
Abstract
Density matrix renormalisation group calculations of a suitably parametrised model of long polyenes (polyacetylene oligomers), which incorporates both long range Coulomb interactions and adiabatic lattice relaxation, are presented. The triplet and 2Ag states are found to have a 2-soliton and 4-soliton form, respectively, both with large relaxation energies. The 1Bu state forms an exciton-polaron and has a very small relaxation energy. The relaxed energy of the 2Ag state lies below that of the 1Bu state. The soliton/anti-soliton pairs are bound.
Keywords
Cite
@article{arxiv.cond-mat/9901126,
title = {Electron-lattice relaxation, and soliton structures and their interactions in polyenes},
author = {Robert J. Bursill and William Barford},
journal= {arXiv preprint arXiv:cond-mat/9901126},
year = {2009}
}
Comments
RevTeX, 5 pages, 4 eps figures included using epsf. To appear in Physical Review Letters. Fig. 1 fixed up