Extended Data Fig. 5: Temperature dependence of Rxx and gap extraction.
From: Ferromagnetism and topology of the higher flat band in a fractional Chern insulator
a-b, Rxx versus ν near ν = -3 (a) and ν = -1 (b), respectively, at selected temperatures from 1 K to 12 K. c-d, Extracted Rxx as a function of inverse temperature (T-1) at ν = -3 (c) and ν = -1 (d). The thermal activation gap is found to be 46(4) K for ν = -1, while it appears that ν = -3 is not fully gapped. e, -Rxy as a function of magnetic field near ν = -2 and D/ε0 = 0, measured at T < 100 mK.
