Physics – Condensed Matter – Superconductivity
Scientific paper
1999-11-22
Physica A 280, 166 (2000)
Physics
Condensed Matter
Superconductivity
9 pages LaTeX with 2 eps figures; Proceedings of the International Conference on Statistical Mechanics and Strongly Correlated
Scientific paper
10.1016/S0378-4371(99)00634-2
We use the doped Fullerenes as an example of how realistic systems can be described by simple models. Starting from the band structure we set up a tight-binding model that describes the t_{1u} conduction band. Adding correlation terms we arrive at a generalized Hubbard Hamiltonian that we treat using quantum Monte Carlo. To address the problem of superconductivity in the doped Fullerenes, we study the screening of a point charge. We find surprisingly efficient metallic screening even for strong correlations, almost up to the Mott transition, and discuss the implications on superconductivity, in particular the effect of the efficient screening on the Coulomb pseudopotential and the electron-phonon coupling.
Gunnarsson Olle
Koch Erik
No associations
LandOfFree
One-electron bands, quantum Monte Carlo, and real superconductors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with One-electron bands, quantum Monte Carlo, and real superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and One-electron bands, quantum Monte Carlo, and real superconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-654445