2 papers
cond-mat.supr-con2024
Band-Structure-Independent Topology from Nonsymmorphic Wannier Complexes
Qinghua He, Jie Zhang, Shengdan Tao +4
Nonsymmorphic symmetries can enforce band connectivity that obstructs a single-band Wannier description. We show that a fractional translation connecting distinct hig…
cond-mat.supr-con2024
Higher-order topology in Fibonacci quasicrystals
Chaozhi Ouyang, Qinghua He, Dong-Hui Xu +1
In crystalline systems, higher-order topology, characterized by topological states of codimension greater than one, typically arises from the mismatch between Wannier centers and a…