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Permitivitty of graphene

  1. Feb 4, 2019 #1
    i'm working on a project about the surface plasmon in graphene.
    i found on some articles that we don't use Drude model to calculate permitivity on graphene but they didn't mention what's the right model !
    can you help me please and give me the relation that link links between permitivity and wave vector in graphene and thanks
  2. jcsd
  3. Feb 6, 2019 #2
    I am not a specialist, but I would look to treat graphene as a surface, i.e. as a boundary condition, if I were you. Corresponingly, you don't want the dielectric constant - you want the surface conductivity (or surface dielectric constant, though this is not accepted as a term)

    See https://aip.scitation.org/doi/abs/10.1063/1.2891452
    Dyadic Green’s functions and guided surface waves for a surface conductivity model of graphene

    Journal of Applied Physics 103, 064302 (2008); https://doi.org/10.1063/1.2891452
    George W. Hansona)
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