Figure 2

Plot of critical supercurrent as a function of the potential strengths of NM region. ( a) Plot of critical supercurrent as a function of the potential strengths of NM region for different Fermi energies of the system. Solid line, dashed line, and dotted line correspond to the Fermi energy with E _F /Δ(0) = 10, 10², and 10³, respectively. In (b ) and (c ), critical supercurrent as a function of the potential strengths for different temperatures is plotted. The other parameters are shown in the figure.