Figure 4
Phase diagram for BaFe2−xMxAs2 (M = Co, Cu and Ni) single crystals as a function of pressure.
The dotted lines are guide to the eyes for the SC domes. The linear fit for the M = Cu compound (solid line) was obtained from the phenomenological expression ΔTc = S(S + 1)(a − bP). Using the same expression and S = 5/2, we obtain the dashed line for the M = Mn compound.
