Mobile small bipolarons on a three-dimensional cubic lattice
arXiv:1201.1400 · doi:10.1103/PhysRevB.86.035106
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.
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Cited by in corpus (9)
- Superconductivity and charge density wave order in the 2D Holstein model
- Going beyond the linear approximation in describing electron- phonon coupling: relevance for the Holstein model
- Strongly bound yet light bipolarons for double-well electron-phonon coupling
- The extended vs standard Holstein model; results in two and three dimensions
- Two-particle bound states on a lattice
- The Effect of Next-Nearest Neighbour Hopping in the One, Two, and Three Dimensional Holstein Model
- Optimal interlayer hopping and high temperature Bose-Einstein condensation of local pairs in quasi 2D superconductors
- Superlight pairs in face-centred-cubic extended Hubbard models with strong Coulomb repulsion
- Effect of screening of the electron-phonon interaction on the temperature of Bose-Einstein condensation of intersite bipolarons