Topological split-ring resonator based metamaterials with $\mathcal{P}\mathcal{T}$ symmetry relying on gain and loss

N. Lazarides, G. P. Tsironis

A one-dimensional metamaterial with parity-time ($\mathcal{P}\mathcal{T}$) symmetry that relies on balanced gain and loss is introduced, comprising of magnetically coupled split-ring resonators…