Charge Ordering Under a Magnetic Field in the Extended Hubbard Model

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We study the charge ordering behavior under a magnetic field $H$ in the extended Hubbard model within the coherent potential approximation. At quarter filling, for small $H$ we find that the relative variation of critical temperature is quadratic with the coefficient $α$ smaller than the one for conventional spin-Peierls systems. For intermediate field, a melting of the charge ordering on decreasing temperature under fixed $H$ at various band filling is found.
9 pages, 4 figures

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Strongly Correlated Electrons, Other Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/23965

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0405335
 http://arxiv.org/abs/cond-mat/0405335
 Modern Physics Letters B, Vol. 17, Nos. 20-21 (2003) 1103-1110

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arXiv