# Novel 2D Plasmon Induced by Metal Proximity

## TL;DR

This paper reports the discovery of a novel 2D plasmon mode induced by metal proximity, which exhibits unique propagation and strong light interaction, blending features of gated and ungated plasmons.

## Contribution

It introduces a new electromagnetic plasma mode in a hybrid system with a conductive gate and 2D electron system, revealing its unique spectrum and strong light coupling.

## Key findings

- New plasmon mode propagates along the gate with no transverse potential nodes
- The spectrum combines features of gated and ungated 2D plasmons
- Exhibits anomalously strong interaction with light

## Abstract

A new electromagnetic plasma mode has been discovered in the hybrid system formed by a highly conductive gate strip placed in proximity to the two-dimensional electron system. The new plasmon mode propagates along the gate strip with no potential nodes present in transverse direction. Its unique spectrum combines characteristic features of both gated and ungated 2D plasmons. The new plasma excitation has been found to exhibit anomalously strong interaction with light.