2 papers
cond-mat.mes-hall2026
A discrete Stiefel-Whitney invariant with twofold rotation symmetry
Ken Shiozaki
We review Stiefel--Whitney invariants and give a discrete formulation of an additional invariant for two-dimensional spinful insulators with twofold rotation and tim…
cond-mat.supr-con2024
Fermi-surface diagnosis for topological superconductivity with -wave-like pairing symmetries
Zhongyi Zhang, Ken Shiozaki, Chen Fang +1
Theoretical prediction of topological superconductivity is key to their discovery. Recently, it is proved that in 199 out of 230 space groups, topological superconductivity coexist…