Extended Data Fig. 6: Determination of TP and Bc2.
a, Temperature dependence of the zero-bias resistance R at ν ≈ 1 (E ≈ 8 mV/nm and B = 0). The pairing temperature TP (≈ 250 mK, vertical dashed line) is defined as the temperature, at which the measured resistance (blue line) deviates from the projected normal-state resistance (orange line) by 20%. Blue line: polynomial fit to the data (symbols); orange line: linear fit to the normal-state resistance ranging from 300–400 mK. b, Magnetic-field dependence of the longitudinal resistance R at differing temperatures (ν ≈ 1 and E ≈ 8 mV/nm). c, Magnetic-field dependence of R at 50 mK. The critical field Bc2 (≈ 80 mT) is defined as the magnetic field, at which the orange and black dashed lines cross. Here the orange line is a linear fit to the normal-state resistance, and the black line is a fit of the unpinned vortex model, \(R\propto \frac{B}{{B}_{C2}}\), to experiment for B < BC2. d, Bias dependence of the differential resistance \(\frac{{dV}}{{dI}}\) at varying magnetic fields (ν = 1, E ≈ 8 mV/nm and T = 50 mK). The dashed line corresponds to Bc2.
