Optical Excitations of Flat Bands Induced by Exciton Condensation in Ta${}_2$Pd${}_3$Te${}_5$

Shaohui Yi, Zhiyu Liao, Chenhao Liang +10

We report on the charge dynamics of Ta${}_2$Pd${}_3$Te${}_5$ using temperature-dependent optical spectroscopy with polarized light. We observe a metal-insulator transition characterized…