Publications and Research
Document Type
Article
Publication Date
11-11-2022
Abstract
The Coulomb excitations of charge density oscillation are calculated for a double-layer heterostructure. Specifically, we consider two-dimensional (2D) layers of silicene and graphene on a substrate. From the obtained surface response function, we calculated the plasmon dispersion relations, which demonstrate how the Coulomb interaction renormalizes the plasmon frequencies. Most importantly, we have conducted a thorough investigation of how the decay rates of the plasmons in these heterostructures are affected by the Coulomb coupling between different types of two- dimensional materials whose separations could be varied. A novel effect of nullification of the silicene band gap is noticed when graphene is introduced into the system. To utilize these effects for experimental and industrial purposes, graphical results for the different parameters are presented.
Comments
This article was originally published in materials and can be accessed at https://doi.org/10.3390/ma15227964.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( https:// creativecommons.org/licenses/by/ 4.0/).