Controlling hybrid-polarization surface plasmon polaritons in dielectric-transparent conducting oxides metamaterials via their effective properties

Abstract

Diversiform hybrid-polarization surface plasmon polaritons (HSPPs) at metamaterial (MM)– dielectric interfaces have initially been predicted by theoretical considerations based on dispersion equations. Here, we discuss hybrid HSPPs at the interface between (1) transparent conducting oxide (TCO)/dielectric MMs and TCO or (2) MMs and dielectrics through a detailed numerical analysis based on a Drude-Lorentz model for the permittivity of the TCO-layer. We show that the introduction of a MM/TCO interface leads to a transformation of the traditional-like SPPs. As a consequence, the new types of surface waves are found, and we reveal the existence of a new type of surface wave which is closely related to the presence of the TCO layers in the MM structure.