Anisotropic moire optical transitions in twisted monolayer/bilayer phosphorene heterostructures.

ABSTRACT: Moiré superlattices of van der Waals heterostructures provide a powerful way to engineer electronic structures of two-dimensional materials. Many novel quantum phenomena have emerged in graphene and transition metal dichalcogenide moiré systems. Twisted phosphorene offers another attractive system to explore moiré physics because phosphorene features an anisotropic rectangular lattice, different from isotropic hexagonal lattices previously reported. Here we report emerging anisotropic moiré optical transitions in twisted monolayer/bilayer phosphorenes. The optical resonances in phosphorene moiré superlattice depend sensitively on twist angle and are completely different from those in the constitute monolayer and bilayer phosphorene even for a twist angle as large as 19°. Our calculations r

SUBMITTER: Zhao S 

PROVIDER: S-EPMC8225781 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature