Mass enhancement in narrow band systems
Superconductivity
2009-10-31 v2 Materials Science
Abstract
A perturbative study of the Holstein Molecular Crystal Model which accounts for lattice structure and dimensionality effects is presented. Antiadiabatic conditions peculiar of narrow band materials and an intermediate to strong electron-phonon coupling are assumed. The polaron effective mass depends crucially in all dimensions on the intermolecular coupling strengths which also affect the size of the lattice deformation associated with the small polaron formation.
Keywords
Cite
@article{arxiv.cond-mat/0004323,
title = {Mass enhancement in narrow band systems},
author = {Marco Zoli},
journal= {arXiv preprint arXiv:cond-mat/0004323},
year = {2009}
}
Comments
Istituto Nazionale di Fisica della Materia - Dipartimento di Matematica e Fisica, Istituto Nazionale di Fisica della Materia Universita' di Camerino, 62032 Camerino, Italy