Realization of Z₂ Topological Photonic Insulators Made from Multilayer Transition Metal Dichalcogenides.

ABSTRACT: Monolayers of semiconducting transition metal dichalcogenides (TMDs) have long attracted interest for their intriguing optical and electronic properties. Recently, TMDs in their quasi-bulk form have started to show considerable promise for nanophotonics thanks to their high refractive indices, large optical anisotropy, wide transparency windows reaching to the visible, and robust room temperature excitons promising for nonlinear optics. Adherence of TMD layers to any substrate via van der Waals forces is a further key enabler for the nanofabrication of complex photonic structures requiring heterointegration. Here, we use the attractive properties of TMDs and realize topological spin-Hall photonic lattices made of arrays of triangular nanoholes in 50 to 100 nm thick WS₂ flakes ex

SUBMITTER: Isoniemi T 

PROVIDER: S-EPMC11603781 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature