the National Key R&D Program of China (2022YFA1404400);the National Natural Science Foundation of China (12125504 and 12074281);the “Hundred Talents Program” of the Chinese Academy of Sciences;the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions;partially funded by a Marie-Curie fellowship (101025315);financial support from the Swedish Research Council (Vetenskapsradet) (2021-04681);funding from a New Investigator Award,EPSRC grant EP/W00187X/1;EPSRC ERC underwrite grant EP/X025829/1;a Royal Society exchange grant IES/ R1/221060;Trinity College,Cambridge。
Topological band theory has conventionally been concerned with the topology of bands around a single gap. Only recently non-Abelian topologies that thrive on involving multiple gaps were studied, unveiling a new horiz...