Transverse-electric surface plasmon polaritons in periodically modulated graphene

作者：Zeeshan Ahmad, Sang Soon Oh, E. A. Muljarov · 发表于：Physical Review Research · 年份：2024 · DOI：10.1103/physrevresearch.6.023185 · 被引用次数：8 · 研究领域：Plasmonic and Surface Plasmon Research、Gold and Silver Nanoparticles Synthesis and Applications、Metamaterials and Metasurfaces Applications

Transverse-electric (TE) surface plasmon polaritons are unique eigenmodes of a homogeneous graphene layer that are tunable with the chemical potential and temperature. However, as their dispersion curve spectrally lies below the light line, they cannot be resonantly excited by an externally incident wave. Here, we propose a way of exciting the TE modes and tuning their peaks in the transmission by introducing a one-dimensional graphene grating. Using the scattering-matrix formalism, we show that periodic modulation of graphene makes transmission more pronounced, potentially allowing for experimental observation of the TE modes. Furthermore, we propose the use of turbostratic graphene to enhance the role of the surface plasmon polaritons in optical spectra. Published by the American Physical Society 2024