Hyperbolic band topology with non-trivial second Chern numbers

To date, studies of topological band theory have mostly dealt with Euclidean space. Here, the authors use classical electric-circuit networks to realize topological insulators in 2D negatively-curved (hyperbolic) space with non-trivial second Chern number.

Bibliographic Details
Main Authors: Weixuan Zhang, Fengxiao Di, Xingen Zheng, Houjun Sun, Xiangdong Zhang
Format: Article
Language:English
Published: Nature Portfolio 2023-02-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-023-36767-8