Plasmon–phonon coupling in graphene–hyperbolic bilayer heterostructures
Yin Ge, Yuan Jun, Jiang Wei, Zhu Jianfei, Ma Yungui†,
       

Schematic of the hybrid structure in our calculation. The graphene monolayer (red) is sandwiched by top air and bottom hyperbolic layer (thickness d) grown on the SiO2 substrate. This two-dimensional composite structure is infinity along the y-axis direction.