Extended Data Fig. 1: Berezinskii-Kosterlitz-Thouless transition of LAO/STO interface in the final G-LAO/STO Devices.
From: Josephson–Coulomb drag effect between graphene and a LaAlO3/SrTiO3 superconductor
a,d, The V-I curves of the LAO/STO interface plotted on a semi-log scale for Devices #1 and #3, respectively. In a, the black lines are V ∝ Iα fits of the data in the transition region, and the gray line corresponds to the V ∝ I3 dependence. In d, the black and gray lines correspond respectively to V ∝ I and V ∝ I3 dependencies. b,e, T-dependence of the exponent α, as deduced from the fits shown in a and d, respectively. c,f, R-T curves of the LAO/STO interface plotted on a [dln(R)/dT]-2/3 scale for Devices #1 and #3, respectively.
