Phase-Resolved Surface Plasmon Interferometry of Graphene
Phase-Resolved Surface Plasmon Interferometry of Graphene
The surface plasmon polaritons (SPPs) of graphene reflect the microscopic spatial variations of underlying electronic structure and dynamics. Here, we excite and image the graphene SPP response in phase and amplitude by near-field interferometry. We develop an analytic cavity model that can self-consistently describe the SPP response function for edge, …