Chiral and hyperbolic plasmons in novel 2-D materials

Andrei Nemilentsau, Tony Low, George Hanson

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The advent of novel 2-D materials has brought to the spotlight the subject of surface polaritons in these materials. It is the goal of this chapter to provide a brief overview of the topic with the emphasis on isotropic, anisotropic, hyperbolic, and chiral plasmons. We derive dispersion equations for the plasmons in general 2-D material described by 2 × 2 conductivity tensor and discuss the concept of k-surfaces crucial for understanding properties of guided modes in anisotropic materials. We supplement results of the analysis by numerical simulations of the surface plasmons excited in the 2-D materials. We demonstrate that anisotropy and hyperbolicity allow for highly directional guiding of the plasmons in the form of subdiffractional beams. We discuss implications of the chirality for unidirectional guiding of the plasmons.

Original languageEnglish (US)
Title of host publicationCarbon-Based Nanoelectromagnetics
PublisherElsevier
Pages119-138
Number of pages20
ISBN (Electronic)9780081023938
ISBN (Print)9780081023945
DOIs
StatePublished - Jan 1 2019

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Ltd. All rights reserved.

Keywords

  • 2-D material
  • Anisotropic plasmons
  • Black phosphorus
  • Chiral plasmons
  • Graphene
  • Hyperbolic plasmons
  • Molybdenum disulfide
  • Plasmons

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