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arXiv 1709.05810physics.optics
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拓扑双曲和狄拉克等离子体激元

Topological Hyperbolic and Dirac Plasmons

Nahid Talebi

摘要:

在这一章中,我们研究了在两种材料的界面处存在横向束缚的传播光模的判据。特别是,被认为是相当普遍的情况下,所涉及的材料被假定为各向异性,但也证明磁电效应。此外,二维材料,如拓扑绝缘体和石墨烯的表面状态也通过考虑存在于界面处的导电片建模。本文提出了一个求广义界面模传播常数的特征方程。此外,还研究了具有磁电效应和拓扑表面态的各向异性材料薄膜的光学模式。结果表明,这种系统支持的界面模式是混合的性质,并可以进一步分解成众所周知的类的横向磁和电模式,只有在磁电效应的情况下。虽然这里的公式在数学上是抽象的,但它们可以用来研究范德华材料、双曲材料和拓扑绝缘体中的极化激元。

英文摘要:

In this chapter, criteria for existence of propagating optical modes which are transversely bound at the interface of two materials are studied. In particular, quite general cases are considered, where the materials involved are assumed to be anisotropic, but also demonstrating magneto-electric effects. Moreover, surface states of two-dimensional materials like topological insulators and graphene are also modeled via consideration of a conductivity sheet existing at the interface. A characteristic equation for obtaining the propagation constant of generalized interface modes is presented. Furthermore, optical modes sustained by a thin film of anisotropic materials with magneto-electric effect and topological surface states are also investigated. It is shown that interface modes supported by such a system are hybrid in nature, and can be further decomposed into the well-known classes of transverse magnetic and electric modes, only at the absence of magneto-electric effect. Although the formulations driven here are mathematically abstract, they can be used to investigate polaritons in van der Waal materials, hyperbolic materials, and topological insulators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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