Revival of Single-Particle Transport Theory for the Normal State of High-Tc Superconductors: I. Relaxation-Time Approximation

TL;DR

This paper revisits the single-particle transport theory for high-Tc superconductors' normal state, focusing on the relaxation-time approximation to address limitations of FLEX and Fermi-liquid theories in explaining Hall coefficient anomalies.

Contribution

It demonstrates the revival of single-particle transport theory using the relaxation-time approximation to better understand high-Tc superconductors.

Findings

FLEX and Fermi-liquid theories fail to explain Hall coefficient behavior

Relaxation-time approximation offers improved explanation of transport anomalies

Highlights limitations of existing theoretical approaches

Abstract

How the fluctuation-exchange (FLEX) approximation and the Fermi-liquid theory fail to explain the anomalous behavior of the Hall coefficient in the normal state of high-Tc superconductors is clarified.