论文标题
波纹金属丝表面上的拓扑表面 - 平价 - 孔子
Topological Surface-plasmon-polaritons on Corrugated Metal-dielectric Surfaces
论文作者
论文摘要
我们在光频频率上研究拓扑表面 - 孔 - 孔子，这是由两分瓦拉吉金属丝线光栅形成的衍射光栅。为此，我们实施了在Della Valle和Longhi中开发的理论，以通过出现的Schrödinger样方程来描述该领域的幅度。 Tri-Harmonic光栅生成了双分式Kronig-Penney模型。然后，预计受拓扑保护的局部模式将发生在光栅边缘，并在两种镜面反对称瓦卢的组合形成的缺陷处发生，在这两种情况下，它们的散装不变性都是逐步变化的Zak相。
We study topological surface-plasmon-polaritons at optical frequencies in diffraction gratings formed by bipartite corrugated metal-dielectric gratings. To do so we implement the theory as developed in Della Valle and Longhi to describe the amplitude of the field by an emergent Schrödinger-like equation. The tri-harmonic grating generates a bipartite Kronig-Penney model. Topologically protected localised modes are then predicted to occur at the edges of the grating and at defects formed by the combination of two mirror antisymmetric corrugations, whose bulk invariant is a step-wise varying Zak phase in both cases.
