Fig. 2: The application to iron-chalcogenide superconductors with/without linear Dirac nodes.
From: Pseudospin-triplet pairing in iron-chalcogenide superconductors
In (a), the two-electron pockets around the M point. For zero spin-orbit coupling, vso = 0, (b) shows the phase diagram as a function of the intra-orbital pairing Δs and the inter-orbital pairing Δo. For the gap parameters represented by the green dot in (b), the nodal superconductor is exhibited in (c), where the eight dark red points represent the chiral symmetry-protected Dirac nodes.
