Vertex corrections in antiferromagnetic spin-fluctuation theories

1 October 1997

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 56 (13) , 7789-7792
https://doi.org/10.1103/physrevb.56.7789

Abstract

We clarify the physical origin of the discrepancy between recent purely perturbative and self-consistent calculations of the vertex correction in the spin-fermion model for cuprates. We argue that perturbative calculations substantially overestimate the strength of the vertex corrections at moderate couplings.

Keywords

All Related Versions

Version 1, 1997-01-23, ArXiv

This publication has 8 references indexed in Scilit:

Elastic and other associated properties of $C_{60}$
Physical Review B, 1997
CriticalbehavioroftheT=0 2 $k_{F}$ density-wave phase transition in a two-dimensional Fermi liquid
Physical Review B, 1995
Quasiparticle spectrum in a nearly antiferromagnetic Fermi liquid: Shadow and flat bands
Physical Review B, 1995
Ward's identity and the suppression of spin fluctuation superconductivity
Journal of Low Temperature Physics, 1995
Observation of a van Hove singularity in ${Bi}_{2}$ ${Sr}_{2}$ ${CaCu}_{2}$ $O_{8 + x}$ with angle-resolved photoemission
Physical Review B, 1995
Observation of an "Extended" Van Hove Singularity in Y ${Ba}_{2}$ ${Cu}_{4}$ $O_{8}$ by Ultrahigh Energy Resolution Angle-Resolved Photoemission
Physical Review Letters, 1994
${YBa}_{2}$ ${Cu}_{3}$ $O_{7}$ : A nearly antiferromagnetic Fermi liquid
Physical Review B, 1993
Dynamic spin fluctuations and the bag mechanism of high- $T_{c}$ superconductivity
Physical Review B, 1989