Prediction of thermomagnetic and thermoelectric properties for novel materials and systems

TL;DR

This paper develops a theoretical framework linking conductivity and thermoelectric coefficients through the chemical potential's temperature derivative, enabling predictions of thermomagnetic and thermoelectric properties in various low-dimensional systems.

Contribution

It introduces a general method to predict thermoelectric and thermomagnetic properties of novel materials based on their electronic spectra and dimensionality.

Findings

Derived expressions relate conductivity and thermoelectric coefficients via chemical potential derivatives.

Applied the method to systems with parabolic and Dirac spectra in different dimensions.

Provided a tool for designing materials with tailored thermoelectric and thermomagnetic properties.

Abstract

We express the link between conductivity and coefficients of Seebeck, Nernst-Ettingshausen, Peltier, and Thompson and Reghi-Leduc via the temperature derivative of the chemical potential of a system. These general expressions are applied to three-, two- and one-dimensional systems of charge carriers having a parabolic or Dirac spectrum. The method allows for predicting thermoelectric and thermomagnetic properties of novel materials and structures.