Revealing the immediate formation of two-fold rotation symmetry in charge-density-wave state of Kagome superconductor CsV${}_3$Sb${}_5$ by optical polarization rotation measurement

Qiong Wu, Z. X. Wang, Q. M. Liu +8

We report the observation of two-fold rotation symmetry in charge density wave (CDW) state in the newly discovered Kagome superconductor CsV${}_3$Sb${}_5$. Below its CDW transition tem…