Figure 4 | Scientific Reports

Figure 4

From: Tailoring far-infrared surface plasmon polaritons of a single-layer graphene using plasmon-phonon hybridization in graphene-LiF heterostructures

Figure 4

(a) Dispersion, (b) propagation length, (c) localization length, and (d) figure of merit of the SPPPs supported by air/graphene/LiF/glass waveguide with t = 10 nm (solid blue lines); the schematic of the studied structure is presented in panel (d), inset. For the sake of comparison, results are also presented for the SPPs of the graphene/glass structure (dashed red lines). Here, μ = 0.2 eV and the dashed black horizontal lines in panel (a) show the edges of the polaritonic gap of LiF.

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