Band-Saddle-Point Engineering in Mixed $A$-site $A$V${}_3$Sb${}_5$ Kagome Metals

Maxim Wenzel, Alexander A. Tsirlin, Andrea N. Capa Salinas +4

$A$V${}_3$Sb${}_5$ compounds ($A$ = K, Rb, Cs) offer an experimental platform for probing the physics of kagome metals near ideal Van Hove filling. Here, we use optical spectroscopy on…