Topological hierarchy matters — topological matters with superlattices of defects
He Jing1, Kou Su-Peng2, †,
       

(a) The illustration of Haldane model on honeycomb lattice. (b) The energy splitting δE versus the flux-distance L for the case of T = 1.0, T′ = 0.1. a is the honeycomb lattice constant. The inset illustrates two π-flux with the flux-distance L. From Ref. [17].