%0 Journal Article
%T Mobile small bipolarons on a three-dimensional cubic lattice
%A A. R. Davenport
%A J. P. Hague
%A P. E. Kornilovitch
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevB.86.035106
%X 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.
%U http://arxiv.org/abs/1201.1400v2