The magnetism of the t-t' Hubbard model

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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.
13 pages, 10 figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/29716

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9909224
 http://arxiv.org/abs/cond-mat/9909224

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arXiv