Unconventional thermoelectric transport in tilted Weyl semimetals
Abstract
We analyze the effect of the tilt on the transverse thermoelectric coefficient of Weyl semimetals in the \emph{conformal} limit, i.e., zero temperature and zero chemical potential. Using the Kubo formalism, we find a nonmonotonic behavior of the thermoelectric conductivity as a function of the tilt perpendicular to the magnetic field, and a linear behavior when the tilt is aligned to the magnetic field. An ``axial Nernst" current (chiral currents counter propagating perpendicularly to the magnetic field and the temperature gradient) is generated in inversion symmetric Weyl materials when the tilt vector has a projection in the direction of the magnetic field. This analysis will help in the design and interpretation of thermoelectric transport experiments in recently discovered topological quantum materials.
Keywords
Cite
@article{arxiv.2209.14331,
title = {Unconventional thermoelectric transport in tilted Weyl semimetals},
author = {Thorvald M. Ballestad and Alberto Cortijo and María A. H. Vozmediano and Alireza Qaiumzadeh},
journal= {arXiv preprint arXiv:2209.14331},
year = {2023}
}
Comments
8 pages, 5 figures