Figure 2: APRES data taken with different low-energy photons.
From: Relation between the nodal and antinodal gap and critical temperature in superconducting Bi2212
The data were collected at T=10 K for an optimally doped Bi2212 with Tc=91 K (OP91). (a,b) Momentum-space mappings at an energy of ω=−30 meV, taken with hν=8.5 and 7.0 eV, respectively, over the fields of view marked by grey rectangles in c. Purple curves denote the Fermi surfaces. (c) Schematic of a Brillouin-zone quadrant. (d) EDCs at the minimum-gap loci of the BB (filled circles) and AB (open diamonds), taken with hν=8.5 and 7.0 eV, respectively.
