Direct Observation of Collective Modes of the Charge Density Wave in the Kagome Metal CsV${}_3$Sb${}_5$

Doron Azoury, Alexander von Hoegen, Yifan Su +8

A new group of kagome metals AV${}_3$Sb${}_5$ (A = K, Rb, Cs) exhibit a variety of intertwined unconventional electronic phases, which emerge from a puzzling charge density wave phase.…