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Leykam, Daniel
복잡계 이론물리 연구단
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Edge modes in two-dimensional electromagnetic slab waveguides: Analogs of acoustic plasmons

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Title
Edge modes in two-dimensional electromagnetic slab waveguides: Analogs of acoustic plasmons
Author(s)
Daniel Leykam; Konstantin Y. Bliokh; Franco Nori
Subject
METAMATERIALS
Publication Date
2020-07
Journal
PHYSICAL REVIEW B, v.102, no.4, pp.045129
Publisher
AMER PHYSICAL SOC
Abstract
© 2020 American Physical Society. We analyze planar electromagnetic waves confined by a slab waveguide formed by two perfect electrical conductors. Remarkably, two-dimensional (2D) Maxwell equations describing transverse electromagnetic modes in such waveguides are exactly mapped onto equations for acoustic waves in fluids or gases. We show that interfaces between two slab waveguides with opposite-sign permeabilities support 1D edge modes, analogous to surface acoustic plasmons at interfaces with opposite-sign mass densities. We analyze this type of edge mode for the cases of isotropic media and anisotropic media with tensor permeabilities (including hyperbolic media). We also take into account “non-Hermitian” edge modes with imaginary frequencies or/and propagation constants. Our theoretical predictions are feasible for optical and microwave experiments involving 2D metamaterials.
URI
https://pr.ibs.re.kr/handle/8788114/7727
DOI
10.1103/PhysRevB.102.045129
ISSN
2469-9950
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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