Finite-Temperature Mott Transition in the Two-Dimensional Hubbard Model
arXiv:cond-mat/0304580 · doi:10.1016/j.jmmm.2004.01.010
Abstract
Mott transitions are studied in the two-dimensional Hubbard model by a non-perturbative theory of correlator projection that systematically includes spatial correlations into the dynamical mean-field approximation. Introducing a nonzero second-neighbor transfer, a first-order Mott transition appears at finite temperatures and ends at a critical point or curve.
2 pages, to appear in J. Mag. Mag. Mat. as proceedings of the International Conference on Magnetism 2003