Fig. 8: Softening of charge susceptibility χc on intercalation.
From: Vertex dominated superconductivity in intercalated FeSe

DMFT vertex corrected χc is plotted in different intra-orbital channels (a) dxy (b) dyz and (c) dxz. For all the channels real part of χc reduces on intercalation. We plot three times the χc for the intercalated phase to bring them to the same scale with non-intercalated phase.