Optical spectroscopy study of charge density wave order in Sr${}_3$Rh${}_4$Sn${}_{13}$ and (Sr${}_{0.5}$Ca${}_{0.5}$)${}_3$Rh${}_4$Sn${}_{13}$

W. J. Ban, H. P. Wang, C. W. Tseng +3

We perform optical spectroscopy measurement across the charge density wave (CDW) phase transitions on single-crystal samples of Sr${}_3$Rh${}_4$Sn${}_{13}$ and (Sr${}_{0.5}$Ca${}_{0.5}$)…