Anomalous and normal dislocation modes in Floquet topological insulators

Abstract

Subject to a periodic drive, quantum materials can develop nontrivial bulk topological state, termed a Floquet topological insulator, which differs from its static counterpart due to the nontrivial role played by the time dimension. Here, the authors theoretically demonstrate that such dynamic topology can be probed by bulk dislocation lattice defects, realizable in state-of-the-art experiments in quantum crystals, cold atomic systems and various metamaterials.