Fig. 3: Landau fans demonstrating correlated Chern Insulators (ChIs).
From: Uncovering the spin ordering in magic-angle graphene via edge state equilibration
a, b Rxx and Rxy as a function of s and B at fixed top gate voltage Vt = 3 V. c Wannier diagram indicating the strongest quantum Hall and ChI states determined from (a, b). The Chern numbers t of the MATBG states are labeled. At high fields, the total Chern numbers of each state are offset by 2 because νMLG = 2. Black, red, orange, and blue lines correspond to states with zero-field intercepts s = 0, s = ∣1∣, s = ∣2∣, and s = ∣3∣, respectively. For states with s = 0, t ≡ νMATBG. Black dashed lines label the MATBG symmetry-broken quantum Hall states −4 < νMATBG <4. d–f Same as a–c, but for Vt = −3, where νMLG = −2 at high fields. Data were collected at T ≈ 300 mK.
