arxiv: 1110.0314 · v4 · pith:HCNHICQVnew · submitted 2011-10-03 · ❄️ cond-mat.mtrl-sci · cond-mat.str-el

Fermi Surface Deformation near Charge-Ordering Transition

Kazuyoshi Yoshimi , Takeo Kato , Hideaki Maebashi This is my paper

classification ❄️ cond-mat.mtrl-sci cond-mat.str-el

keywords charge-orderingdeformationferminearsurfacetransitionanisotropyapplying

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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.

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Fermi Surface Deformation near Charge-Ordering Transition

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