Tunable zero modes and quantum interferences in flat-band topological insulators
Tunable zero modes and quantum interferences in flat-band topological insulators
We investigate the interplay between Aharonov-Bohm (AB) caging and topological protection in a family of quasi-one-dimensional topological insulators, which we term CSSH ladders. Hybrids of the Creutz ladder and the SSH chain, they present a regime with completely flat bands, and a rich topological phase diagram, with several kinds of …