Fig. 6
Differential conductance-versus-voltage spectra for a planar S-n-I-n-S junction with identical s-wave superconductors and high-transparency transition region (D I = 0.7) without n interlayer (α = 0) and for a finite thickness of the normal n interlayer. Shaded regions show positions of the 2Δ s /n features (peaks in the first case and dips in the second case) in the conductance spectra