Bingkun Qi

Nov 29, 2023 | link.aps.org | Staten Island |Courtney D Fleming |Liang Feng |Bingkun Qi

We present an approach to achieve zero modes in lattice models that do not rely on any symmetry or topology of the bulk, which are robust against disorder in the bulk of any type and strength. Such symmetry-free zero modes (SFZMs) are formed by attaching a single site or small cluster with zero mode(s) to the bulk, which serves as the “nucleus” that expands to the entire lattice.