Plasmon–phonon coupling in graphene–hyperbolic bilayer heterostructures

Yin Ge, Yuan Jun, Jiang Wei, Zhu Jianfei, Ma Yungui^†,

Dispersions and mode patterns of the type-II band of the graphene–hBN heterostructures. The dispersion curves (a) without and (b) with graphene. The x-component electric field E_x distributions corresponding to the color points (c) C (1500 cm⁻¹), (e) E (1600 cm⁻¹), and (g) G (1500 cm⁻¹) labeled in panel (a). The E_x distributions corresponding to the color points (d) D (1500 cm⁻¹), (f) F (1600 cm⁻¹), and (h) H (1700 cm⁻¹) labeled in panel (b).