Polaron features of the one-dimensional Holstein Molecular Crystal Model
Condensed Matter
2009-10-31 v1
Abstract
The polaron features of the one-dimensional Holstein Molecular Crystal Model are investigated by improving a variational method introduced recently and based on a linear superposition of Bloch states that describe large and small polaron wave functions. The mean number of phonons, the polaron kinetic energy, the electron-phonon local correlation function, and the ground state spectral weight are calculated and discussed. A crossover regime between large and small polaron for any value of the adiabatic parameter is found and a polaron phase diagram is proposed.
Cite
@article{arxiv.cond-mat/0011180,
title = {Polaron features of the one-dimensional Holstein Molecular Crystal Model},
author = {V. Cataudella and G. De Filippis and G. Iadonisi},
journal= {arXiv preprint arXiv:cond-mat/0011180},
year = {2009}
}
Comments
12 pages, 2 figures