Plasmons in layered structures including graphene

Abstract

We investigate the optical properties of layered structures with graphene at the interface for arbitrary linear polarization at finite temperature including full retardation by working in the Weyl gauge. As a special case, we obtain the full response and the related dielectric function of a layered structure with two interfaces. We apply our results to discuss the longitudinal plasmon spectrum of several single and double layer devices such as systems with finite and zero electronic densities. We further show that a nonhomogeneous dielectric background can shift the relative weight of the in-phase and out-of-phase mode and discuss how the plasmonic mode of the upper layer can be tuned into an acoustic mode with specific sound velocity.

18 pages, 6 figures

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• Ultrahigh refractive index sensitivity of TE-polarized electromagnetic waves in graphene at the interface between two dielectric media
• Dielectric screening and plasmons in AA-stacked bilayer graphene
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• Localized plasmons in bilayer graphene nanodisks
• Entanglement harvesting in double-layer graphene by vacuum fluctuations in a microcavity
• Transverse current current response of graphene at finite temperature, plasmons and absorption
• Plasmons at the LaAlO${}_3$/SrTiO${}_3$ interface and Graphene-LaAlO${}_3$/SrTiO${}_3$ double layer
• Non-local quantum effects in plasmons of graphene superlattices
• Controlling surface charge and spin density oscillations by Dirac plasmon interaction in thin topological insulators
• Collective magnetic excitations in AA- and AB-stacked graphene bilayers
• Entanglement harvesting in buckled honeycomb lattices by vacuum fluctuations in a microcavity
• Broadband Focusing of Acoustic Plasmons in Graphene with an Applied Current
• Dynamical density response and collective modes of topological insulator ultra-thin films
• Nonlinear Hall effect as a local probe of plasmonic magnetic hot spots