Strong Correlation Effects in the Fullerene C20
Strongly Correlated Electrons
2011-11-09 v1 Superconductivity
Abstract
The smallest fullerene, dodecahedral C20, is studied using a one band Hubbard model parameterized by U/t. Results are obtained using exact diagonalization of matrices with linear dimensions as large as 5.7 x 10^9, supplemented by quantum Monte Carlo. We report the magnetic and spectral properties of C20 as a function of U/t and investigate electronic pair binding. Solid forms of C20 are studied using cluster perturbation theory and evidence is found for a metal-insulator transition at U ~ 4t. We also investigate the relevance of strong correlations to the Jahn-Teller effect in C20.
Cite
@article{arxiv.cond-mat/0701727,
title = {Strong Correlation Effects in the Fullerene C20},
author = {Fei Lin and Erik S. Sørensen and Catherine Kallin and A. John Berlinsky},
journal= {arXiv preprint arXiv:cond-mat/0701727},
year = {2011}
}
Comments
5 pages, 5 figures, RevTeX