Figure 4: Pairing amplitudes of K1−xFe2−ySe2 and iron pnictides for xy and xz/yz orbitals.
From: Superconductivity at the border of electron localization and itinerancy
(a,b) Comparison of the competing dominant pairing amplitudes A1g 
, A1g 
and B1g 
for the xy 3d orbital of K1−xFe2−ySe2 and iron pnictides, both for electron doping δ=0.15 and J2/D=0.1. (c,d) The same as a and b but for the xz/yz 3d orbitals. For K1−xFe2−ySe2 the amplitude for the A1g 
channel is strongly suppressed compared with the pnictides case. Correspondingly, a pure B1g 
state is observed for K1−xFe2−ySe2 but is absent in iron pnictides.
