(a) Universal scaling of current according to Eq. (6). Lower branch corresponds to applied voltages below critical, V < Vc, while the upper branch shows a small range of data at voltage directly above critical, 0.24 < V < 0.25. Fitting analysis results in the scaling exponent ε = 1.0 neat Mott MIT. (b) Universal scaling of current at V > 0.26, where finite number of particles in the system causes a different from the Mott MIT scaling behavior, with a scaling exponent ε = 0.66.