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Angle-resolved study of density-waves, superconductivity and pseudogap in two dimensions

Research paper by D. Zanchi

Indexed on: 20 Nov '02Published on: 20 Nov '02Published in: Physics - Strongly Correlated Electrons



Abstract

Weakly correlated electrons on a square lattice are studied by angle-resolved functional renormalization group. Upon renormalization the interaction starts to depend on momenta and has pole-like solutions near a doping-dependent characteristic critical energy scale. Near half-filling this scale is the pseudogap temperature T*. In the overdoped regime the critical scale is the mean-field like critical temperature for d-wave superconductivity.