Effect of uniaxial strain on the Drude weight of graphene

TL;DR

This paper investigates how uniaxial strain affects the Drude weight in graphene's conductivity, revealing a nonmonotonic relationship that could be observed via infrared spectroscopy, linked to strain-induced electronic transitions.

Contribution

It provides new insights into the strain-dependent behavior of graphene's electronic properties, highlighting the nonmonotonic dependence of the Drude weight on strain and its potential experimental detection.

Findings

Drude weight exhibits nonmonotonic dependence on uniaxial strain.

Strain-induced electronic topological transitions influence conductivity.

Infrared spectroscopy can detect strain effects on plasmon frequency.

Abstract

We study the dependence on the strength and orientation of applied uniaxial strain of the Drude weight in the conductivity of graphene. We find a nonmonotonic dependence on strain, which may be related to the proximity to several strain-induced electronic topological transitions. Given the relation between the Drude weight and the long-wavelength plasmon frequency, such a strain dependence can be evidenced by infrared spectroscopy measurements.