Non-Fermi-liquid behavior due to short range order

Abstract

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.

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

References in corpus (7)

• One-Dimensional Fermi liquids
• Quasiparticle Dispersion of the 2D Hubbard Model: From an Insulator to a Metal
• Theory for the excitation spectrum of High-T$_c superconductors : quasiparticle dispersion and shadows of the Fermi surface
• Incipient antiferromagnetism and low-energy excitations in the half-filled two-dimensional Hubbard model
• Microscopic theory of the pseudogap and Peierls transition in quasi-one-dimensional materials
• Theory for Dynamical Short Range Order and Fermi Surface Volume in Strongly Correlated Systems
• Destruction of density-wave states by a pseudo-gap in high magnetic fields: application to (TMTSF)${}_2$ClO${}_4$

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• Pseudogap in underdoped cuprates and spin-density-wave fluctuations
• Models of the Pseudogap State of Two-Dimensional Systems
• Quasi-particles and their absence in photoemission spectroscopy
• Photoemission Spectroscopy and the Unusually Robust One Dimensional Physics of Lithium Purple Bronze
• Enumeration of many-body skeleton diagrams
• Non - Fermi Liquid Behavior in Fluctuating Gap Model: From Pole to Zero of the Green's function
• Fluctuation effects in disordered Peierls systems
• The Hubbard model on a triangular lattice -- pseudogap due to spin-density-wave fluctuations
• Electronic structure and signature of Tomonaga-Luttinger liquid state in epitaxial CoSb${}_{1-x}$ nanoribbons
• Non-Fermi liquid behavior of quasi one-dimensional pseudogap materials
• Coexistance of non-Fermi liquid behavior and bi-quadratic exchange coupling in La-substituted CeGe: Non-linear susceptibility and DFT + DMFT study
• Optical conductivity of a quasi-one-dimensional system with fluctuating order