Magnetodispersion of Two-Dimensional Plasmon Polaritons

TL;DR

This paper explores the behavior of two-dimensional plasmon polaritons under magnetic fields, revealing their hybridization with photonic modes and validating a new theoretical model with experimental data.

Contribution

It introduces a comprehensive theory for 2D plasmon polaritons and demonstrates their hybridization with photonic modes in a disk-shaped 2DES with experimental validation.

Findings

Hybridization of 2D plasmon polaritons with photonic modes

Good agreement between theory and experimental data

Spectrum of 2D plasmon polaritons over full magnetic field range

Abstract

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 TM$_0$ 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.