Non-local correlations in metals close to a charge order insulator transition

Details Non-local correlations in metals close to a charge order insulator transition Non-local correlations in metals close to a charge order insulator transition

2007-06-13

arxiv.org/abs/0706.1897v1

Phys. Rev. Lett. 99, 036404 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 6 Figures, accepted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.99.036404

The charge ordering transition induced by the nearest-neighbor Coulomb repulsion, V, in the 1/4-filled extended Hubbard model is investigated using Cellular Dynamical Mean-Field Theory. We find a transition to a strongly renormalized charge ordered Fermi liquid at VCO and a metal-to-insulator transition at VMI>VCO. Short range antiferromagnetism occurs concomitanly with the CO transition. Approaching the charge ordered insulator the Fermi surface deforms and the scattering rate of electrons develops momentum dependence on the Fermi surface.

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