Ghost surface phononic polaritons in ionic-crystal metamaterial
作者： Sheng Zhou , Qiang Zhang , Shu Fang Fu , Xuan Zhang Wang
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摘要: Ghost electromagnetic waves were recently predicted in anisotropic transparent materials by E. Narimanov. In this paper, three ghost surface phonon polaritons (GSPhPs) are at the single oblique of layered ionic-crystal metamaterial (ICMM). They propagate along surface, but their fields ICMM sinusoidally oscillate and exponentially attenuate with distance from surface. The GSPhPs mutually different character. An additional unique GSPhP is found on boundary between effective metal hyperbolic regions ICMM, its characteristics as follows: (1) energy can only conduct outside ICMM; (2) wave vector electric field possess same direction transverse to material optical axis. conditions for existence discussed. numerical results obtained based ZnS/SiO2 metamaterials.
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