Transverse electric surface mode in atomically thin Boron-Nitride

TL;DR

This paper predicts that atomically thin Boron-Nitride supports a transverse electric surface mode in the visible spectrum, with significant confinement and propagation distance, based on analysis of its surface susceptibility and conductivity.

Contribution

It introduces the prediction of a transverse electric surface mode in single-layer Boron-Nitride, expanding understanding of surface wave phenomena in 2D materials.

Findings

BorN support a transverse electric surface mode at 633 nm

Mode has a spatial confinement of 15 microns

Propagation distance exceeds 2 centimeters

Abstract

The spatial confinement and the propagation length of surface waves in a single-layer two-dimensional atomic crystal are analysed in term of its surface susceptibility and its surface conductivity. Based on the values of these macroscopic parameters, extracted from experimental observations, it is confirmed that graphene supports a transverse magnetic non-radiating surface mode in the ultraviolet spectral region while a single-layer hexagonal Boron-Nitride is predicted to support a transverse electric non-radiating surface mode in the visible spectrum. This last mode, at a vacuum wavelength of 633 nm, has a spatial confinement of 15 microns and an intensity-propagation distance greater than 2 cm.