Charge Ordering Under a Magnetic Field in the Extended Hubbard Model

Details Charge Ordering Under a Magnetic Field in the Extended Hubbard Model Charge Ordering Under a Magnetic Field in the Extended Hubbard Model

2004-05-15

arxiv.org/abs/cond-mat/0405335v2

Modern Physics Letters B, Vol. 17, Nos. 20-21 (2003) 1103-1110

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 4 figures

Scientific paper

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 ${\alpha}$ 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.

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