One-way Tamm plasmon-polaritons on the interface of magnetophotonic crystals and conducting metal oxides

摘要

We demonstrate theoretically the existence of one-way Tamm plasmon-polaritonson the interface between magnetophotonic crystals and conducting metal oxides.In contrast to conventional surface plasmon-polaritons (SPPs), Tammplasmon-polariton (TPPs) occur at frequencies above the bulk plasma frequencyof the conducting materials, provided that the dispersion curves of suchsurface modes lie outside the light cone for the conducting oxides andsimultaneously fall into the photonic band gap of the magnetophotonic crystal.The nonreciprocal properties of TPPs are caused by violation of the periodicityand time reversal symmetry in the structure. Calculations on the fielddistribution and transmission spectra through the structure are employed toconfirm the theoretical results, which could potentially impact on a broadrange of SPP-related phenomena in applications.