Figure 4From: Dirac fermion heating, current scaling, and direct insulator-quantum Hall transition in multilayer epitaxial grapheneEffective Dirac fermion temperature T DF versus driving current I on a log- log scale. The red line corresponds to the best fit in the high-current regime. The exponent in the TDF-I relation is given as α = 0.52 ± 0.01. The error stems from interpolation of the magnetoresistivity data.Back to article page