Optical properties of the charge-density-wave polychalcogenide compounds $R_2$Te${}_5$ ($R$=Nd, Sm and Gd)

F. Pfuner, L. Degiorgi, K. Y. Shin +1

We investigate the rare-earth polychalcogenide $R_2$Te${}_5$ ($R$=Nd, Sm and Gd) charge-density-wave (CDW) compounds by optical methods. From the absorption spectrum we extract the e…