Extended Data Fig. 9: Temperature dependence of C = -2 Chern insulator state at high magnetic fields.
From: Ferromagnetism and topology of the higher flat band in a fractional Chern insulator
a, b, Filling factor dependent Rxx (a) and −Rxy (b) at selected temperatures at a fixed field of 13 T. Data are symmetrized and anti-symmetrized at ±13 T. Note that at low doping levels the contact resistance does not become negligible, hence the deviation from FCI behavior. c, Thermal activation behavior of Rxx near the filling factor of ν = -2.3, which indicates an energy gap of 13(3) K.
