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      Hybrid plasmon-phonon polariton bands in graphene-hexagonal boron nitride metamaterials [Invited]

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      Author(s)
      Hajian, H.
      Ghobadi, A.
      Dereshgi, S. A.
      Butun, B.
      Özbay, Ekmel
      Date
      2017
      Source Title
      Journal of the Optical Society of America B: Optical Physics
      Print ISSN
      0740-3224
      Publisher
      Optical Society of America
      Volume
      34
      Issue
      7
      Pages
      D29 - D35
      Language
      English
      Type
      Article
      Item Usage Stats
      274
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      402
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      Abstract
      We theoretically investigate mid-infrared electromagnetic wave propagation in multilayered graphene-hexagonal boron nitride (hBN) metamaterials. Hexagonal boron nitride is a natural hyperbolic material that supports highly dispersive phonon polariton modes in two Reststrahlen bands with different types of hyperbolicity. Due to the hybridization of surface plasmon polaritons of graphene and hyperbolic phonon polaritons of hBN, each isolated unit cell of the graphene-hBN metamaterial supports hybrid plasmon-phonon polaritons (HPPs). Through the investigation of band structure of the metamaterial we find that, due to the coupling between the HPPs supported by each unit cell, the graphene-hBN metamaterial can support HPP bands. The dispersion of these bands can be noticeably modified for different thicknesses of hBN layers, leading to the appearance of bands with considerably flat dispersions. Moreover, analysis of light transmission through the metamaterial reveals that this system is capable of supporting high-k propagating HPPs. This characteristic makes graphene-hBN metamaterials very promising candidates for the modification of the spontaneous emission of a quantum emitter, hyperlensing, negative refraction, and waveguiding. © 2017 Optical Society of America.
      Keywords
      Boron nitride
      Dispersion (waves)
      Electromagnetic wave polarization
      Electromagnetic wave propagation
      Graphene
      Light transmission
      Metamaterials
      Nitrides
      Photons
      Plasmons
      Quantum theory
      Refraction
      Hexagonal boron nitride
      Hexagonal boron nitride (h-BN)
      Multi-layered graphene
      Negative refractions
      Phonon polaritons
      Quantum emitters
      Reststrahlen band
      Surface plasmon polaritons
      Phonons
      Permalink
      http://hdl.handle.net/11693/37034
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/JOSAB.34.000D29
      Collections
      • Department of Electrical and Electronics Engineering 4011
      • Department of Physics 2550
      • Institute of Materials Science and Nanotechnology (UNAM) 2258
      • Nanotechnology Research Center (NANOTAM) 1179
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