Fig. 2
From: Superconducting gap anisotropy sensitive to nematic domains in FeSe
Superconducting gap anisotropy of twinned FeSe. a Definition of FS angle in case of p-polarized light. Red points indicate the kF positions where energy distribution curves (EDCs) in b and c are taken. b EDCs at various kF points along the FS at 15 K (gray) and 2 K (red). Black lines show the fits to the BCS fitting function. FS angle defined in a is shown for each EDC. c The same as b but symmetrized with respect to EF. d–f The same as a–c but taken with s-polarized light
