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Solid State Communications

Short range correlation in a two-dimensional electron liquid

Y. Isawa, Hiroshi Yasuhara

Published Jun 1, 1983• 13 citations
Publisher
DOI
10.1016/0038-1098(83)90007-8

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An exactly soluble one-dimensional model of electrons interacting with order-parameter fluctuations 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.