Extended Data Fig. 5: Tunnelling spectroscopy at lower tunnelling transmission in devices 1 and 2. | Nature

Extended Data Fig. 5: Tunnelling spectroscopy at lower tunnelling transmission in devices 1 and 2.

From: Evidence of topological superconductivity in planar Josephson junctions

Extended Data Fig. 5

aj, Results obtained for device 1. kt, Results obtained for device 2. The devices were intended to be lithographically identical. a, c, e, g, i, G as a function of Φ threading the SQUID loop and Vsd measured at different values of B|| in device 1 (W1 = 80 nm). The QPC was tuned to reduce the above-gap conductance by a factor of about 3 with respect to the one measured in the regime presented in the main text. At zero field, the sub-gap conductance is suppressed. Colour extrema have been saturated. b, d, f, h, j, Conductance line cuts versus Vsd taken at \(\phi \) = 0, π, as indicated by red and black ticks in a, c, e, g, i. The grey dashed lines indicate Vsd = 0. k, m, o, q, s, G as a function of Φ threading the SQUID loop and Vsd measured at different values of B|| in device 2 (W1 = 80 nm). Colour extrema have been saturated. l, n, p, r, t, Conductance line cuts versus Vsd taken at phase bias \(\phi \) = 0, π, as indicated by red and black ticks in k, m, o, q, s. The grey dashed lines indicate Vsd = 0.

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