Absence of $E_{2g}$ nematic instability and dominant $A_{1g}$ response in the kagome metal CsV${}_3$Sb${}_5$

Zhaoyu Liu, Yue Shi, Qianni Jiang +12

Ever since the discovery of the charge density wave (CDW) transition in the kagome metal CsV${}_3$Sb${}_5$, the nature of its symmetry breaking is under intense debate. While evidence…