Fig. 2: Nonlinear correction to the anomalous Hall in TBG.
From: General nonlinear Hall current in magnetic insulators beyond the quantum anomalous Hall effect
a Band structure of twisted bilayer graphene for θ ~ 1.05o. Remote dispersive bands contribute to the interband correction, which vanishes in the single-band limit. b Magnitude of the correction to the AHC \({\sigma }^{xy,0}=\frac{{e}^{2}}{h}\) as a function of applied uniaxial strain ϵ in TBG. Momentum space distribution of δσxy for ϵ = 0 (c) and ϵ = 0.8% in (d).
