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Mobile small bipolarons on a three-dimensional cubic lattice

Davenport, A. R. ; Hague, J. P. and Kornilovitch, P. E. (2012). Mobile small bipolarons on a three-dimensional cubic lattice. Physical Review B, 86(3) 035106.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1103/PhysRevB.86.035106
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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.

Item Type: Journal Article
Copyright Holders: 2012 American Physical Society
ISSN: 1098-0121
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Biomedical Research Network (BRN)
Item ID: 33988
Depositing User: James Hague
Date Deposited: 11 Jul 2012 14:27
Last Modified: 07 Mar 2014 13:48
URI: http://oro.open.ac.uk/id/eprint/33988
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