Figure 5
From: Antiferromagnetic Metal and Mott Transition on Shastry-Sutherland Lattice
Evolution of the staggered magnetic order parameter m and the single-particle gap ΔE as a function of U at T = 0.1 and t2 = 1.0.
When the interaction is weak, ΔE = 0 m = 0 and the system is in a paramagnetic (PM) metal phase. With the increasing of the interaction U, an antiferromagnetic (AFM) metal phase found with m ≠0 but ΔE = 0. When U is strong enough, ΔE ≠0 m ≠0 and the system enters an antiferromagnetic (AFM) insulator phase. The insert picture is for t2 = 1.4.
