Fig. 3: Theoretical results.
From: Observation of interlayer plasmon polaron in graphene/WS2 heterostructures
a, b The plasmon dispersion ωq and electron-plasmon coupling \({a}_{q}^{2}\), respectively, for various v. The vertical dotted line denotes q = kF. c–e EDCs of the WS2 normal state spectral function in G0W0 theory (green dashed) and G0W0+C theory (red solid) at \(\bar{{{{{{{{\rm{K}}}}}}}}}\) for a variety of v. The vertical dotted black lines denote \(\omega=-{\mu }_{{{{{{{{{\rm{WS}}}}}}}}}_{2}}-n({\omega }_{q={k}_{F}}-{\mu }_{{{{{{{{{\rm{WS}}}}}}}}}_{2}})\), for n = 0 to 4. f Energy splitting ΔE between the WS2 CBM and the first shake-off band as a function of v, in G0W0 theory (green dashed) and G0W0+C theory (red solid). The black dotted line denotes \({\omega }_{q={k}_{F}}-{\mu }_{{{{{{{{{\rm{WS}}}}}}}}}_{2}}\), and the gray horizontal lines denote the experimentally measured ΔE.
