On the electronic viscosity of a Dirac fluid in deformed graphene

TL;DR

This paper investigates how strain affects the electronic viscosity of a Dirac fluid in graphene, revealing that applying strain significantly reduces the shear viscosity coefficient.

Contribution

It introduces a theoretical framework linking strain and velocity gradients to pseudo-fields in graphene, showing their impact on electronic viscosity.

Findings

Shear viscosity decreases with applied strain

Pseudo-magnetic and pseudo-electric fields are introduced into the Dirac equation

Analytical methods establish the viscosity-strain relationship

Abstract

We discuss the properties of the electronic viscosity of a Dirac fluid in deformed graphene by introducing a strain and velocity gradient as equivalent to a pseudo-magnetic and pseudo-electric field respectively into the Dirac equation. It is thereby analytically established that the dynamic shear viscosity coefficient substantially decreases with the applied strain.