Ferromagnetism in the Hubbard Model on fcc-type lattices
Strongly Correlated Electrons
2009-10-30 v2
Abstract
The Hubbard model on fcc-type lattices is studied in the dynamical mean-field theory of infinite spatial dimensions. At intermediate interaction strength finite temperature Quantum Monte Carlo calculations yield a second order phase transition to a highly polarized, metallic ferromagnetic state. The Curie temperatures are calculated as a function of electronic density and interaction strength. A necessary condition for ferromagnetism is a density of state with large spectral weight near one of the band edges.
Keywords
Cite
@article{arxiv.cond-mat/9704229,
title = {Ferromagnetism in the Hubbard Model on fcc-type lattices},
author = {Martin Ulmke},
journal= {arXiv preprint arXiv:cond-mat/9704229},
year = {2009}
}
Comments
typos corrected, references updated, discussion extented