Modified method of surface plasmons in metal superlattices*
Zhang Yu-Lianga), Wang Xuan-Zhangb)†
       
Coordinate system and semi-infinite superlattice composed of alternating metal (m) and dielectric (d) layers. The structure occupies the half-space of x > 0 and metal-layer and dielectric-layer thicknesses are defined as d m and d d. The other half space (c) is air.