Linear-in-frequency optical conductivity in GdPtBi due to transitions near the triple points

F. Hütt, A. Yaresko, M. B. Schilling +4

The complex optical conductivity of the half-Heusler compound GdPtBi is measured in a frequency range from 20 to 22 000 cm${}^{-1}$ (2.5 meV - 2.73 eV) at temperatures down to 10 K i…