Figure 1

(a) Formation energies per formula cell of monolayer Mo1−xWxS2 and atomic structures of two ordered phases with (b) x = 1/3 and (c) x = 2/3. The blue dots represent the values calculated from DFT, and the pink stars represent the values from CE prediction. The blue solid line with dots is for the convex hull of ground states. The red solid with squares and orange triangles represent the values of disordered phase and quasi-ordered phase, respectively.