Faraday rotation in graphene

TL;DR

This paper investigates the magneto-optical Faraday rotation in monolayer graphene using quantum field theory, confirming experimental results and predicting new regimes with significant effects.

Contribution

It applies the Dirac model to explain Faraday rotation in graphene and predicts regimes with pronounced magneto-optical effects.

Findings

Good agreement with experimental giant Faraday rotation

Predicted new regimes with strong effects

Analyzed dependence on sample parameters

Abstract

We study magneto--optical properties of monolayer graphene by means of quantum field theory methods in the framework of the Dirac model. We reveal a good agreement between the Dirac model and a recent experiment on giant Faraday rotation in cyclotron resonance. We also predict other regimes when the effects are well pronounced. The general dependence of the Faraday rotation and absorption on various parameters of samples is revealed both for suspended and epitaxial graphene.