Optical Properties of Superconducting K${}_{0.8}$Fe${}_{1.7}$(Se${}_{0.73}$S${}_{0.27}$)${}_2$ Single Crystals

Andrei Muratov, Yevgeny Rakhmanov, Andrei Shilov +2

The optical properties of the superconducting K${}_{0.8}$Fe${}_{1.7}$(Se${}_{0.73}$S${}_{0.27}$)${}_2$ single crystals with a critical temperature $T_c\approx 26$ K have been measured in the…