Characteristics of dispersion modes supported by Graphene Chiral Graphene waveguide

Abstract

A theoretical formulation is obtained for a chiral filled waveguide formed by two parallel graphene layers. The thin graphene layers are extended infinitesimally and Kubo formula is used for surface conductivity. The fields expressions in the model are obtained using Maxwell’s equations. It is shown that a chiral filled graphene parallel-plate waveguide can guide hybrid mode instead of quasi-transverse electromagnetic modes. The influence of chirality and or chemical potential on the properties of electromagnetic wave propagation in a planar graphene-chiral-graphene waveguide is discovered under realistic material parameters. A dispersion expression is derived, which covers the achiral graphene-chiral-graphene case. It is observed that when the chirality is raised to certain value the propagating mode is vanished. It is also revealed that chirality and chemical potential might modulate the propagation mode in the waveguide. This work may enrich the electromagnetic theory which is of great importance for Electronic devices. The presented results are compared with published under special cases.