Figure 6
From: Antiferromagnetic Metal and Mott Transition on Shastry-Sutherland Lattice
t2 − U phase diagram at T = 0.1 is illustrated in (b). Schematic diagrams of a1) paramagnet, a2) antiferromagnet and a3) dimer phase are also shown. When t2 < 1.3, there is an antiferromagnetic metal phase between the paramagnetic metal phase and antiferromagnetic insulator phase. When t2 > 1.3, a low-temperature paramagnetic insulator phase emerges (which should consist of a small plaquette phase and a dimer phase).
