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Title: Plasmons in graphene on uniaxial substrates

Placing graphene on uniaxial substrates may have interesting application potential for graphene-based photonic and optoelectronic devices. Here, we analytically derive the dispersion relation for graphene plasmons on uniaxial substrates and discuss their momentum, propagation length, and polarization as a function of frequency, propagation direction, and both ordinary and extraordinary dielectric permittivities of the substrate. We find that the plasmons exhibit an anisotropic propagation, yielding radially asymmetric field patterns when a point emitter launches plasmons in the graphene layer.
Authors:
 [1] ;  [2] ; ;  [3] ;  [2]
  1. Universidad del País Vasco, 48940 Leioa (Spain)
  2. (Spain)
  3. CIC nanoGUNE Consolider, 20018 Donostia-San Sebastián (Spain)
Publication Date:
OSTI Identifier:
22257130
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIELECTRIC MATERIALS; DISPERSION RELATIONS; FREQUENCY DEPENDENCE; GRAPHENE; PERMITTIVITY; PLASMONS; SUBSTRATES