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Surface plasmons at the interface of metamaterial and topological insulator

机译:超材料与拓扑绝缘体交界处的表面等离激元

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We investigate the propagation of surface plasmon polaritons (SPPs) at the boundary of metamaterial and topological insulators. Instances of Bi2Se3, Bi2Te3 and metamaterial boundaries are investigated. The topological insulators under consideration are three dimensional topological insulators of the second generation. Dispersion relations, absorption characteristics and propagation lengths of SPPs are calculated. The variation of bulk dielectric functions of topological insulators and metamaterial is considered by means of the Drude model and effective medium approximation theory. The key parameters making a dramatic impact on propagation lengths are acknowledged and mechanisms for engineering dispersion properties are suggested.
机译:我们调查超材料和拓扑绝缘体边界处的表面等离振子极化子(SPPs)的传播。研究了Bi2Se3,Bi2Te3和超材料边界的实例。正在考虑的拓扑绝缘体是第二代的三维拓扑绝缘体。计算了SPP的色散关系,吸收特性和传播长度。利用德鲁伊模型和有效介质近似理论,考虑了拓扑绝缘体和超材料的整体介电函数的变化。公认对传播长度产生重大影响的关键参数,并提出了工程色散特性的机制。

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