Fig. 4: Additional FCIs at higher magnetic field.
From: Fractional Chern insulators in magic-angle twisted bilayer graphene

a–d, Measurements of dµ/dn (\(\times \)10−11 mV cm−2) in various density ranges between 6 and 12 T showing additional FCIs and SBCIs. e–h, Wannier diagrams corresponding to the states observed in a–d coloured according to the classification used in Fig. 1b. Green, yellow and orange lines denote the correlated insulators, SBCIs and FCIs, respectively.