Fermi Surface Deformation near Charge-Ordering Transition

Kazuyoshi Yoshimi; Takeo Kato; Hideaki Maebashi

doi:10.1143/JPSJ.80.123707

Fermi Surface Deformation near Charge-Ordering Transition

Materials Science 2011-11-28 v4 Strongly Correlated Electrons

Authors: Kazuyoshi Yoshimi , Takeo Kato , Hideaki Maebashi

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Abstract

We study the deformation of a Fermi surface (FS) near charge-ordering (CO) transition. By applying a fluctuation-exchange approximation to the two-dimensional extended Hubbard model, we show that the FS is largely modified by strong charge fluctuations when the wave number of the CO pattern does not match the nesting vector of the FS in a noninteracting system. We also discuss the enhanced anisotropy in quasiparticle properties in the resultant metallic state.

Keywords

fermi surface fermi liquid theory hubbard model phase diagram

Cite

@article{arxiv.1110.0314,
  title  = {Fermi Surface Deformation near Charge-Ordering Transition},
  author = {Kazuyoshi Yoshimi and Takeo Kato and Hideaki Maebashi},
  journal= {arXiv preprint arXiv:1110.0314},
  year   = {2011}
}

Comments

4 pages, 5 figures

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