Extended Data Fig. 6: Nonlinear anomalous Hall response.
From: Switchable moiré potentials in ferroelectric WTe2/WSe2 superlattices
a, Linear dependence of the second-harmonic Hall voltage on the bias current squared at varying filling factors. The current modulation frequency is 17 Hz. The measurement temperature is 25 K. b, Filling factor dependence of the nonlinear anomalous Hall response \(V_ \bot ^{2\omega }/I^2\) at varying excitation frequencies of 17, 37, 77, 107, and 137 Hz. The response is independent of the excitation frequency.
