Constraints on the orbital flux phase in $A$V${}_3$Sb${}_5$ from polar Kerr effect

Hao-Tian Liu, Junkang Huang, Tao Zhou +1

The $A$V${}_3$Sb${}_5$ ($A=$ K, Rb, Cs) family of Kagome metals hosts unconventional charge density wave order whose nature is still an open puzzle. Accumulated evidences point to a ti…