Extended Data Fig. 3: Additional RMCD measurements of the 2.6° tMoTe2.
From: Ferromagnetism and topology of the higher flat band in a fractional Chern insulator
a, RMCD signal as a function of filling factor (ν) and electric field (D/ε0) near ν = -3, measured at zero magnetic field. A clear ferromagnetic ‘wing-like’ feature is visible. b, Magnetic field dependence of RMCD at selected filling factors, represented by the green dots in a. The electric field was fixed at zero (D/ε0 = 0). c, Magnetic field dependence of RMCD at selected electric fields, marked by the black dots in a, at a fixed filling factor of ν ≈ -3.7. The data in a-c are taken at 1.6 K. d-i, RMCD maps as a function of ν and D/ε0 at different temperatures (T), measured at a small field of 50 mT. The ferromagnetic signal at ν = -3 disappears first around 6 K while the ν = -1 signal persists up to approximately 9-10 K. j, k, Magnetic field dependence of RMCD at D/ε0 = 0 for ν = -1 (j) and ν = -3 (k) at different temperatures from 2 K to 9 K (j) and 2 K to 6 K(k).
