Mobile small bipolarons on a three-dimensional cubic lattice
Strongly Correlated Electrons
2015-06-03 v2 Superconductivity
Abstract
We use numerically exact quantum Monte Carlo (QMC) to compute the properties of three-dimensional bipolarons for interaction strengths where perturbation theory fails. For intermediate electron-phonon coupling and Hubbard U, we find that bipolarons can be both small and light, a prerequisite for bipolaron superconductivity. We use the QMC results to make estimates of transition temperatures, which peak at between 90-120 K and are demonstrated to be insensitive to Coulomb repulsion and impurities.
Cite
@article{arxiv.1201.1400,
title = {Mobile small bipolarons on a three-dimensional cubic lattice},
author = {A. R. Davenport and J. P. Hague and P. E. Kornilovitch},
journal= {arXiv preprint arXiv:1201.1400},
year = {2015}
}