Fig. 1: Analysis of thermal conductivity.

A compares the thermal conductivity of graphene reported by Wang et al.¹ and those analyzed in this work. We have plotted thermal conductivity as a function of spot temperature. We used the reported data in Supplementary Fig. 18 of ref. ¹ to compute thermal conductivity. In B, the same data are presented in a logarithmic scale, in addition to literature data on the thermal conductivity of graphene and graphite. Arrows show two power-law regimes. Data for graphite are taken from refs. ^8,9, and for graphene are taken from refs. ^3,6,10 for natural carbon.