Figure 3: Phase diagram and pairing amplitudes of K1−xFe2−ySe2 and iron pnictides.
From: Superconductivity at the border of electron localization and itinerancy
The results presented here are for electron doping δ=0.15. a and b, respectively, show the zero-temperature phase diagrams of K1−xFe2−ySe2 and iron pnictides. Region I corresponds to an A1g state with dominant 
channel. Regions II and III mark an A1g+iB1g state with dominant 
and 
channels (II), and dominant 
and 
channels (III); the phase locking occurs only at low temperatures. Region IV for K1−xFe2−ySe2 is a pure B1g state with dominant 
channel. (c,d)The corresponding pairing amplitudes for the xy 3d orbital of K1−xFe2−ySe2 and iron pnictides.
