Extended Data Figure 5: Magnetic-field scans of \({{\boldsymbol{R}}}_{{\boldsymbol{xx}}}\) and \({{\boldsymbol{R}}}_{{\boldsymbol{xy}}}\) at \({\boldsymbol{\nu }}={\bf{1}}\).
From: Quantum anomalous Hall effect from intertwined moiré bands
Magnetic-field dependence of \({R}_{{xy}}\) (a) and \({R}_{{xx}}\) (b) under varying electric fields at 1.6 K. Each curve for \({R}_{{xy}}\) is vertically shifted by 60 kΩ for clarity. No vertical shift is applied to \({R}_{{xx}}\). The green and purple curves are inside the QAH region; they display nearly quantized \({R}_{{xy}}\) and small \({R}_{{xx}}\). A remnant anomalous Hall response (clear magnetic hysteresis but not quantized) is observed near the QAH-metal boundary (yellow curve). A nearly quantized Hall response with large \({R}_{{xx}}\gg {R}_{{xy}}\) is observed near the Mott-QAH boundary (blue curve). It is a quantized Hall insulator. Further away from the boundary and into the Mott region,\({R}_{{xx}}\) diverges rapidly and \({R}_{{xy}}\) diminishes (red and black curves).
