Figure 1: Phase diagram for $\text{Ba}({\text{Fe}}_{1-x}{\text{Co}}_x{)}_2$. Yellow indicates the superconducting phase, which appears below the superconducting transition temperature $T_c$. A structural transition occurs at $T_s$ from the tetragonal phase (Tet) at higher temperature to the orthorhombic phase (Ort). Blue represents the antiferromagnetic order (AFM), which appears at $T_N$, slightly below $T_s$ for finite $x$. The stripes of enhanced superfluid density are observed only in the regime $0.04<x<0.06$.