Figure 3
(a) Fermi-surface energy contours (solid lines): blue (red) represents the band with ; the dashed lines indicate the node structure of the gap function. (b) Constant contours of energy (spectral function) for the superconducting state on the plane at . The small pockets, , which appear around the nodes in the spectral function, moderate the scattering wave vectors. (c) The absolute value of the total quasiparticle interference (QPI) spectrum on the plane, corresponding to the spectral function in (b). Note: The range of plots in (a)–(c) and (e) is . (d) The QPI intensity along the direction for inter- (intra-) band scatterings in the upper (lower) panel. The peaks (1–6) are related to the main scattering vectors, namely, 1: and , 2: and (umklapp scattering), 3: , 4: , and finally, 5: and 6: for umklapp scatterings, and (e) represents the direction of the in the entire Brillouin zone, here yellow/blue correspond to .
Reuse & Permissions