Thermo-Plasma Polariton within Scaling Theory of Single-Layer Graphene

TL;DR

This paper analyzes the electrodynamics of single-layer graphene at finite temperatures, revealing a weakly damped thermo-plasma polariton mode with temperature-dependent properties that could enable new control methods.

Contribution

It provides an analytical description of thermo-plasma polaritons in graphene, highlighting their temperature-dependent dispersion and damping characteristics.

Findings

Existence of a weakly damped thermo-plasma polariton mode in graphene

Mode properties strongly depend on temperature

Potential for new generation and manipulation techniques

Abstract

Electrodynamics of single-layer graphene is studied in the scaling regime. At any finite temperature, there is a weakly damped collective thermo-plasma polariton mode whose dispersion and wavelength dependent damping is determined analytically. The electric and magnetic fields associated with this mode decay exponentially in the direction perpendicular to the graphene layer, but unlike the surface plasma polariton modes of metals, the decay length and the mode frequency are strongly temperature dependent. This may lead to new ways of generation and manipulation of these modes.