Cooperative electron-phonon interaction in molecular chains
Strongly Correlated Electrons
2008-03-04 v2 Materials Science
Abstract
Using a controlled analytic treatment, we derive a model that generically describes cooperative strong electron-phonon interaction (EPI) in one-band and two-band Jahn-Teller (JT) systems. The model involves a {\em next-nearest-neighbor} hopping and a nearest-neighbor repulsion. Rings with odd number of sites (o-rings) belong to a different universality class compared to rings with even number (e-rings). The e-rings, upon tuning repulsion, undergo a dramatic discontinuous transition to a {\em conducting commensurate} charge density wave (CDW) state with a period independent of filling.
Cite
@article{arxiv.0712.0366,
title = {Cooperative electron-phonon interaction in molecular chains},
author = {Sudhakar Yarlagadda},
journal= {arXiv preprint arXiv:0712.0366},
year = {2008}
}
Comments
Added Jahn-Teller system