The magnetism of the t-t' Hubbard model
Strongly Correlated Electrons
2007-05-23 v1
Abstract
The magnetic properties of the t-t' Hubbard Model in the two dimensional square lattice are studied within an unrestricted Hartree-Fock approximation in real space. The interplay between antiferromagnetism, ferromagnetism, phase separation and inhomogeneous magnetic textures is studied. It is shown that, at sufficiently large values of t'/t, a rich fenomenology is to be expected between the antiferromagnetic phase at half filling and the ferromagnetic phase a lower fillings.
Cite
@article{arxiv.cond-mat/9909224,
title = {The magnetism of the t-t' Hubbard model},
author = {B. Valenzuela and M. A. H. Vozmediano and F. Guinea},
journal= {arXiv preprint arXiv:cond-mat/9909224},
year = {2007}
}
Comments
13 pages, 10 figures