Topological electromagnetic waves in dispersive and lossy plasma crystals.

ABSTRACT: Topological photonic crystals, which offer topologically protected and back-scattering-immune transport channels, have recently gained significant attention for both scientific and practical reasons. Although most current studies focus on dielectric materials with weak dispersions, this study focuses on topological phases in dispersive materials and presents a numerical study of Chern insulators in gaseous-phase plasma cylinder cells. We develop a numerical framework to address the complex material dispersion arising from the plasma medium and external magnetic fields and identify Chern insulator phases that are experimentally achievable. Using this numerical tool, we also explain the flat bands commonly observed in periodic plasmonic structures, via local resonances, and how edge states c

SUBMITTER: Qian C 

PROVIDER: S-EPMC10665461 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature