Extended Data Fig. 1: Reproducibility of the quantum anomalous Hall effect.
From: Observation of fractionally quantized anomalous Hall effect
a, Optical microscope images of three Hall bar devices studied in this work. Twist angles are indicated. Scale bar, 10 μm. b, Atomic force microscopy image of the device before contact gate fabrication. Scale bar, 2 μm. c, Contact geometry used in the main figures for the respective devices unless otherwise specified. The electrodes in dashed lines are floated. d, Magnetic field dependence of Rxx and Rxy at 100 mK. The quantization of Rxy and concomitant nearly vanishing Rxx demonstrates the robustness of the quantum anomalous Hall effect in tMoTe2 across a large range of twist angles.
