Fig. 7 | Nature Communications

Fig. 7

From: Induced unconventional superconductivity on the surface states of Bi2Te3 topological insulator

Fig. 7

Temperature dependence of the Josephson current for a high transparency junction. Critical current as a function of the temperature, measured at the first cool down for the junction of Fig. 1c (full circles). The red line is the fitting considering a quasi-ballistic transport model (see Supplementary Note 6 and Supplementary Equations (510)). We extract the following fitting parameters for the mean free path l e = 130 nm and the transparencies of the two barriers D 1 = D 2 = 0.98. From Supplementary Equation (13) the expected normal-state resistance is R N = 70 Ω. The experimental value for R N is instead 35 Ω. The discrepancy between these two values can be attributed to the shunting effect of the bulk of the Bi2Te3 flake

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