Revival of Single-Particle Transport Theory for the Normal State of High-Tc Superconductors: II. Vertex Correction

2013/01/25 by Osamu Narikiyo, Narikiyo, Osamu
Physics and Astronomy · #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.1301.5996

The footnote 10 has been added in the version 3

arxiv created 2013/04/20 · arxiv updated 2013/04/23

Abstract

The vertex correction for the electric current is discussed on the basis of the Fermi-liquid theory. It does not alter the qualitative description of the electric transport by the relaxation-time approximation in the case of the normal state of high-Tc superconductors. The failure of the transport theory employing the fluctuation-exchange (FLEX) approximation is pointed out. It becomes manifest by considering the Ward identity for the fluctuation mode.

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