Figure 3. Transmission probability with and without graphene.
The transmission probability (2) is represented in absence of graphene, and with graphene for μ = 0.1, 0.3, 0.5 eV. The horizontal dashed line represents the frequency ωspp of the surface phonon-polariton resonance of hBN, while the dot-dashed lines describe the resonance of the graphene - InSb system. The enhancement of transmission probability is clearly visible around the intersection point of the two branches for μ = 0.5 eV, whereas the same coupling produces an increase of the cutoff wavevector kc for smaller values of the chemical potential.