Intrinsic temperature dependences of transport coefficients within the hot-spot model for normal state YBCO

TL;DR

This paper revisits the temperature dependence of transport coefficients in a hot-spot model for YBCO, highlighting deviations from universal behavior and illustrating effects with numerical examples based on band structure calculations.

Contribution

It provides a detailed analysis of temperature dependences within the hot-spot model, emphasizing deviations from universal trends in normal state transport of cuprates.

Findings

Deviations from universal temperature dependences are systematic.

Numerical examples illustrate effects of band structure on transport.

The hot-spot model explains some experimental observations in YBCO.

Abstract

The temperature dependences of the galvanomagnetic and thermoelectric transport coefficients within a generic hot-spot model are reconsidered. Despite the recent success in explaining ac Hall effect data in YBa_{2}Cu_{3}O_{7}, a general feature of this model is a departure from the approximately universal temperature dependences observed for normal state transport in the optimally doped cuprates. In this paper, we discuss such systematic deviations and illustrate some of their effects through a concrete numerical example using the calculated band structure for YBa_{2}Cu_{3}O_{7}.