Phonon-assisted optical excitation in the narrow bandgap Mott insulator Sr3Ir2O7

H. J. Park, C. H. Sohn, D. W. Jeong +6

We examined the temperature (T) evolution of the optical conductivity spectra of Sr${}_3$Ir${}_2$O${}_7$ over a wide range of 10-400 K. The system was barely insulating, exhibiting a sma…