Fermi Surface Deformation near Charge-Ordering Transition

Details Fermi Surface Deformation near Charge-Ordering Transition Fermi Surface Deformation near Charge-Ordering Transition

2011-10-03

arxiv.org/abs/1110.0314v4

J. Phys. Soc. Jpn. 80, 123707 (2011)

Physics

Condensed Matter

Materials Science

4 pages, 5 figures

Scientific paper

10.1143/JPSJ.80.123707

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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