The bulk-boundary correspondence and the tenfold classification table are important concepts for topological insulators and superconductors as they determine the nature or absence of topological boundary states. Using generalized Su-Schrieffer-Heeger and Kitaev models, the authors demonstrate topological domain-wall states in the classes where topology is thought to be impossible.
- Sang-Hoon Han
- Myungjun Kang
- Sangmo Cheon
