Surface plasmons in layered semiconductor-dielectric structures

Abstract

Eigenwaves in a parallel plate waveguide loaded with a tangentially magnetised semiconductor layer sandwiched between two dissimilar dielectric layers are analysed. The dispersion equation (DE) is factorised in order to separate dynamic and plasmonic type waves. Then asymptotic solutions of the factorised DE are obtained in closed form for the plasmonic type eigenwaves and used as initial approximations for the numerical solution. The simulated dispersion characteristics, field and Poynting vector distributions show that the parameters of the dielectric layers surrounding the semiconductor layer may qualitatively alter the fundamental properties of the surface magnetoplasmons.