Temperature Dependence of Interlayer Magnetoresistance in Anisotropic Layered Metals

TL;DR

This paper investigates how finite temperature effects influence interlayer magnetoresistance in anisotropic layered metals, revealing significant modifications to resistance maxima and confirming anisotropic, linear temperature-dependent scattering in cuprates.

Contribution

It introduces a finite temperature model for interlayer conductivity in anisotropic layered metals, improving the analysis of high-temperature AMRO experiments.

Findings

Resistance maxima are more affected by thermal effects than minima.

The anisotropic, linear-in-temperature scattering rate conclusion is confirmed.

Finite temperature effects are crucial for accurate resistivity modeling at high temperatures.

Abstract

Studies of interlayer transport in layered metals have generally made use of zero temperature conductivity expressions to analyze angle-dependent magnetoresistance oscillations (AMRO). However, recent high temperature AMRO experiments have been performed in a regime where the inclusion of finite temperature effects may be required for a quantitative description of the resistivity. We calculate the interlayer conductivity in a layered metal with anisotropic Fermi surface properties allowing for finite temperature effects. We find that resistance maxima are modified by thermal effects much more strongly than resistance minima. We also use our expressions to calculate the interlayer resistivity appropriate to recent AMRO experiments in an overdoped cuprate which led to the conclusion that there is an anisotropic, linear in temperature contribution to the scattering rate and find that this conclusion is robust.