Superior robustness of anomalous non-reciprocal topological edge states.

ABSTRACT: Robustness against disorder and defects is a pivotal advantage of topological systems¹, manifested by the absence of electronic backscattering in the quantum-Hall² and spin-Hall effects³, and by unidirectional waveguiding in their classical analogues^4,5. Two-dimensional (2D) topological insulators^4-13, in particular, provide unprecedented opportunities in a variety of fields owing to their compact planar geometries, which are compatible with the fabrication technologies used in modern electronics and photonics. Among all 2D topological phases, Chern insulators^14-25 are currently the most reliable designs owing to the genuine backscattering immunity of their non-reciprocal edge modes, brought via time-reversal symmetry breaki

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC8514337 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature