Figure 3
From: Antiferromagnetic Metal and Mott Transition on Shastry-Sutherland Lattice

(a) Density of state (DOS) for different U with T = 0.2 and t2 = 1.0. Mott metal-insulator transition happens at U = 9.5 where an obvious gap appears around the Fermi level. DOS when b) T = 0.1, t2 = 1.0, c) T = 0.1, t2 = 0.8 and d) T = 0.1, t2 = 1.2 are also plotted, where the transition points are U = 8, 6.5 and 9.1 respectively.