Hybrid Graphene-Gyroelectric Structures: A Novel Platform for THz Applications

TL;DR

This paper presents a new tunable graphene-gyroelectric waveguide platform for THz applications, enabling control of magneto-plasmons through magnetic bias and chemical potential adjustments.

Contribution

It introduces an analytical model for hybrid graphene-gyroelectric structures and demonstrates their tunability for non-reciprocal THz plasmonic devices.

Findings

Propagating features can be tuned by magnetic bias and chemical potential.

The structure offers a new platform for non-reciprocal THz devices.

Analytical relations for waveguide modes are derived.

Abstract

This paper investigates tunable magneto-plasmons in graphene-based structures combined with gyro-electric layers. In the general waveguide, each graphene sheet has been sandwiched between two different gyro-electric layers. The whole structure has been exposed in the presence of a magnetic bias. An accurate analytical model based on all propagating modes has been proposed and led to closed-form complicated relations. As a special case of the multi-layer waveguide, a hybrid graphene-gyroelectric structure is studied in this paper. It has been illustrated that the propagating features of the exemplary waveguide can be tuned by changing the external magnetic bias and the chemical potential of graphene, which makes it a new tunable platform for the design of non-reciprocal plasmonic devices in the THz region.