paper

Enhanced anomalous Nernst effect in disordered Dirac and Weyl materials

arXiv:2008.07974 · doi:10.1103/PhysRevB.103.075424

Abstract

We analyze the thermoelectric response of Dirac and Weyl semimetals using the semiclassical approach, focusing on the extrinsic contributions due to skew-scattering and side jump. Our results apply to linear response Nernst effect in ferromagnetic Dirac materials such as Fe $_{3}$ Sn $_{2}$ , Weyl semimetal Co $_{3}$ Sn $_{2}$ S $_{2}$ and to second order response of monolayer graphene on hBN with trigonal warping. Our analysis indicates that the extrinsic contributions can be a significant component of anomalous Nernst response and used to explain an enhanced thermoelectric response.

12 pages, 3 figures