Phase separation in the Hubbard Model

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Making use of symmetry properties and known exact results for the Hubbard Model on bipartite lattice, we show that (1) there is no phase separation for repulsive coupling at low dopings, (2) phase separation and superconductivity co-exist in the ground states for attractive coupling in a range of filling fractions.
8 pages, LATEX, to appear in Phys. Rev. Lett

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/27463

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9602054
 http://arxiv.org/abs/cond-mat/9602054

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arXiv