Nernst effect of Dirac fermions in graphene under weak magnetic field

TL;DR

This paper derives the transport coefficients of Dirac fermions in graphene under weak magnetic fields, focusing on the Nernst effect and thermoelectric power, and compares theoretical results with experimental data.

Contribution

It provides a theoretical calculation of the Nernst conductivity and thermoelectric power of Dirac fermions in graphene considering impurity scattering and weak magnetic fields.

Findings

Calculated Nernst conductivity matches experimental data.

Identified the influence of impurity scattering on thermoelectric properties.

Provided a self-consistent theoretical framework for transport in graphene.

Abstract

The derivation for the transport coefficients of an electron system in the presence of temperature gradient and the electric and magnetic fields are presented. The Nernst conductivity and the transverse thermoelectric power of the Dirac fermions in graphene under charged impurity scatterings and weak magnetic field are calculated on basis of the self-consistent Born approximation. The result is compared with so far the available experimental data.