Fermi arcs and the hidden zeros of the Green's function in the pseudogap state

Details Fermi arcs and the hidden zeros of the Green's function in the pseudogap state Fermi arcs and the hidden zeros of the Green's function in the pseudogap state

2005-08-12

arxiv.org/abs/cond-mat/0508302v2

Phys. Rev. B 74, 125110 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

revised version; 5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.74.125110

We investigate the low energy properties of a correlated metal in the proximity of a Mott insulator within the Hubbard model in two dimensions. We introduce a new version of the Cellular Dynamical Mean Field Theory using cumulants as the basic irreducible objects. These are used for re-constructing the lattice quantities from their cluster counterparts. The zero temperature one particle Green's function is characterized by the appearance of lines of zeros, in addition to a Fermi surface which changes topology as a function of doping. We show that these features are intimately connected to the opening of a pseudogap in the one particle spectrum and provide a simple picture for the appearance of Fermi arcs.

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