Extended Data Fig. 6: Anisotropic gap filling and finite energy resolution.
From: Unconventional spectral signature of Tc in a pure d-wave superconductor
a, b, As in Fig. 3c, d. The Fermi surface angle and the ratio between gap size at 30 K (Δ30K) and energy resolution (Reso) are labelled beneath each curve in a. c, d, As in a, b, but obtained from data intentionally broadened in energy such that all curves have the same Δ30K/Reso of 2.1. The broadening is directly performed on data without Fermi-function division, such as those in Extended Data Fig. 2. The close resemblance between the top and bottom panels indicate that the anisotropic gap filling is not an artefact from finite resolution.
