New type of gyrotropy in graphene — Comparison with gyrotropy in plasmas

The gyrotropic properties of magnetically biased graphene are compared to these of magnetically biased plasmas. Graphene exhibits a significant polarization rotation phenomenon at frequencies below the cyclotron resonance, where plasmas do not provide any polarization rotation. At frequencies above the cyclotron resonance the behavior of graphene is similar to this of plasmas. Graphene allows the control of its gyrotropic properties via a static electric field, while keeping the bias magnetic field constant, in contrast to plasmas where the variation of the bias magnetic field is required.