Extended Data Fig. 2: Out-of-plane magnetic field dependence of critical current and the Berezinskii–Kosterlitz–Thouless transition.
From: Impact of spin–orbit coupling on superconductivity in rhombohedral graphene
a–d, Differential resistance dV/dI as a function of the direct current IDC and out-of-plane magnetic field B⊥, for D1 SC4 (a), D1 SC3 (b), D2 SC4 (c), and D2 SC3 (d). Fraunhofer oscillation patterns can be seen in D1 SC4 but not in other superconducting states. e, f, Voltage V as a function of direct current IDC at different temperature, for D1 SC4 (e) and D1 SC3 (f), measured at the green and orange marker positions in Fig. 1b. By comparing the data with V ~ I3 (grey dash lines), we can determine the Berezinskii-Kosterlitz-Thouless transition temperature TBKT is 173 mK for D1 SC4 and 85 mK for D1 SC3.
