Epsilon-Near-Zero behavior from Plasmonic Dirac Point: theory and realization using two-dimensional materials

Citation:

M.Mattheakis, C. A. Valagiannopoulos, and E. Kaxiras. 11/10/2016. “Epsilon-Near-Zero behavior from Plasmonic Dirac Point: theory and realization using two-dimensional materials.” Physical Review B, 94, 20, Pp. 201404(R). Publisher's Version Copy at https://j.mp/2nJPTjx
arXiv_PDP_ENZ.pdf2.45 MB

Abstract:

The electromagnetic response of a two-dimensional metal embedded in a periodic array of a dielectric host can give rise to a plasmonic Dirac point that emulates Epsilon-Near-Zero (ENZ) behavior. This theoretical result is extremely sensitive to structural features like periodicity of the dielectric medium and thickness imperfections. We propose that such a device can actually be realized by using graphene as the 2D metal and materials like the layered semiconducting transition-metal dichalcogenides or hexagonal boron nitride as the dielectric host. We propose a systematic approach, in terms of design characteristics, for constructing metamaterials with linear, elliptical and hyperbolic dispersion relations which produce ENZ behavior, normal or negative diffraction.

Last updated on 11/10/2016