Resolution:
## Figure 2.
Doping dependences of superconducting gap parameters. (a) Nodal gap energy 2Δ_{N} (blue circles) and antinodal gap energy 2Δ^{∗} (red squares)
[8]. The solid curve denotes an energy of 8.5k_{B}T_{c}. (b) Square of nodal-to-antinodal gap ratio (Δ_{N}/Δ^{∗})^{2} determined from ARPES
[8]. (c) Superfluid density ρ_{s} determined from magnetic penetration depth (triangles)
[21] and from heat capacity (crosses)
[22]. (d) Superconducting gap profiles normalized to the antinodal gap for underdoped and optimally
doped samples with T_{c} = 42, 66, and 91 K (UD42, UD66, and OP91, respectively). (e) Correlation between 2Δ_{N}/k_{B}T_{c} and 2Δ^{∗}/k_{B}T_{c} ratios. The insets illustrate the occurrence of incoherent electron pairs in strong
coupling superconductivity.
Ino |