Magnetodispersion of two-dimensional plasmon polaritons
We have investigated the spectrum of two-dimensional (2D) plasmon polaritons over the full range of magnetic
fields. In our study, we investigate a disk-shaped two-dimensional electron system (2DES) with a metallic gate on
the backside of the substrate. Importantly, we show that 2D plasmon polaritons hybridize with the TM0 photonic
mode of a dielectric waveguide formed by a sample substrate.We have developed a theory for plasmon-polaritons
in an infinite 2DES. We find the experimental data to be in good agreement with the developed theory.