Fig. 2: Condensation-induced band gap opening and calculated spectra function with exciton order.
From: Evidence of high-temperature exciton condensation in a two-dimensional semimetal
a ARPES spectra taken with p polarized light along \(\overline{\Gamma {{{{{\rm{M}}}}}}}\) direction at 300 K and 10 K. The data at 10 K shows the gap opening and folded bands around the \(\overline{{{{{{\rm{M}}}}}}}\) point. b Calculated spectral functions of single-layer ZrTe2 in the normal and condensed phases. The mean-field solutions of the model in the condensed phase are shown as red dashed curves.
