Fig. 3: Evolution of the flat band crossing different electronic phases.
From: Band insulator to Mott insulator transition in 1T-TaS2
a The second derivative images of the energy–momentum cuts taken along the Γ–M direction in different electronic phases. b The schematic illustration of band evolution crossing different phases. Red circles show the fitted peak maxima from the data in a. Black lines guides the eyes to the flat band dispersions. Brown thick lines illustrate the bands at high binding energy.
