Discovery of Ĉ₂ rotation anomaly in topological crystalline insulator SrPb

Topological crystalline insulators (TCIs) are insulating electronic states with nontrivial topology protected by crystalline symmetries. Recently, theory has proposed new...拓扑晶体绝缘体（Topological crystalline insulators, TCIs）是一类受晶体对称性保护、具有拓扑非平庸特性的绝缘电子态。近年来，理论研究已提出了新型的……