Bi-gyrotropic single-negative magnetic materials in the presence of longitudinal magnetization: A transfer matrix approach

In a single-negative medium, electric permittivity (ϵ) or magnetic permeability (μ) coefficients are negative. In order to use the potential of magnetic metamaterials, in the present study, we have investigated bi-gyrotropic single-negative magnetic materials (BSNMMs) having their ϵ and μ in the form of non-diagonal tensors. At first, we have introduced a transfer matrix method (TMM)-based approach for studying optical and magneto-optical (MO) properties of BSNMMs and multilayer structures containing them in the case of longitudinal configuration of magnetization. Then, we have studied numerical computation on the reflection geometry for both ϵ-negative and μ-negative typical BSNMMs for different permittivity and permeability values.