Non-Fermi-liquid behavior due to short range order

Details Non-Fermi-liquid behavior due to short range order Non-Fermi-liquid behavior due to short range order

1996-09-19

arxiv.org/abs/cond-mat/9609179v1

Phys. Rev. B 54, R12709 1996

Physics

Condensed Matter

5 pages, RevTeX + epsf, 5 figures. To appear in Physical Review B, Rapid Communications, November 1, 1996

Scientific paper

10.1103/PhysRevB.54.R12709

An exactly soluble one-dimensional model of electrons interacting with order parameter fluctations associated with short-range order is considered. The energy and momentum dependence of the electronic self energy and spectral function are calculated and found to exhibit non-Fermi-liquid features similar to that seen for the two-dimensional Hubbard model: a pseudogap, shadow bands, anomalies in the self energy, and breakdown of the quasiparticle picture. Deviations from Fermi liquid behavior are largest close to the Fermi surface and as the correlation length increases.

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