Fig. 3: Angular distributions of superconducting gap on Fermi surface sheets.
From: Revealing the intrinsic superconducting gap anisotropy in surface-neutralized BaFe2(As0.7P0.3)2
a Angle dependence of the symmetrized energy distribution curves (EDCs) taken on the α hole pocket. The red dashed line guides the eyes to the gap anisotropy. E–EF represents the binding energy of electrons. E is the kinetic energy of electrons and EF is the Fermi energy. The red arrow illustrates the direction of the data presentation. b The merged image of the symmetrized EDCs for better visualizing the gap anisotropy. The polar angle (θ) is defined in a. Panels c, d, e, f, g, and h are the same as a and b, but taken on the δ, β, and η pockets, respectively. All data were taken in the D3 sample at 8 K.
