The localization transition at finite temperatures: electric and thermal transport

TL;DR

This paper investigates the Anderson localization transition at finite temperatures, analyzing electrical and thermal transport properties, revealing critical behavior and proposing a method to characterize the transition's critical exponent through measurements.

Contribution

It introduces a new approach to characterize the localization transition at finite temperatures using conductivity and thermopower measurements.

Findings

Critical behavior of thermoelectric coefficients identified.

Method outlined for extracting the conductivity critical exponent.

Analysis includes electrical and thermal conductivities at finite temperatures.

Abstract

The Anderson localization transition is considered at finite temperatures. This includes the electrical conductivity as well as the electronic thermal conductivity and the thermoelectric coefficients. An interesting critical behavior of the latter is found. A method for characterizing the conductivity critical exponent, an important signature of the transition, using the conductivity and thermopower measurements, is outlined.