Linear-in-Frequency Optical Conductivity over a broad range in the three-dimensional Dirac semimetal candidate Ir${}_2$In${}_8$Se

S. X. Xu, H. Q. Pi, R. S. Li +5

The optical conductivity of the new Dirac semimetal candidate Ir${}_2$In${}_8$Se is measured in a frequency range from 40 to 30000 cm${}^{-1}$ at temperatures from 300 K down to 10 K. Th…