Quasi-classical cyclotron resonance of Dirac fermions in highly doped graphene

TL;DR

This paper investigates the quasi-classical cyclotron resonance in highly doped graphene, revealing classical behavior with a linear magnetic field dependence and defining an effective mass related to the Fermi level.

Contribution

It demonstrates the classical cyclotron resonance in highly doped graphene, contrasting with previous quantum regime studies, and clarifies the relationship between Fermi level and effective mass.

Findings

Cyclotron resonance energy is linear in magnetic field.

Effective mass is proportional to Fermi level.

Classical behavior observed in highly doped graphene.

Abstract

Cyclotron resonance in highly doped graphene has been explored using infrared magnetotransmission. Contrary to previous work, which only focused on the magneto-optical properties of graphene in the quantum regime, here we study the quasi-classical response of this system. We show that it has a character of classical cyclotron resonance, with an energy which is linear in the applied magnetic field and with an effective cyclotron mass defined by the position of the Fermi level m = E_F/v_F^2.