A new electromagnetic mode in graphene

TL;DR

This paper predicts a novel, tunable transverse electromagnetic mode in graphene that can be adjusted across a wide frequency range from radio to infrared by controlling charge density.

Contribution

It introduces a new electromagnetic mode in graphene, expanding understanding of its optical properties and potential applications.

Findings

Mode is weakly damped and transverse

Frequency can be tuned via gate voltage

Mode exists within a specific energy window

Abstract

A new, weakly damped, {\em transverse} electromagnetic mode is predicted in graphene. The mode frequency $\omega$ lies in the window $1.667<\hbar\omega/\mu<2$, where $\mu$ is the chemical potential, and can be tuned from radiowaves to the infrared by changing the density of charge carriers through a gate voltage.