Extended Data Fig. 5: Second-harmonic nonlinear response and transport nonreciprocity.
Angle dependence measurement of (a) \({V}_{\parallel }^{2\omega }\) and (b) η|| at ν = 0.25 and (c) \({V}_{\parallel }^{2\omega }\) and (d) ηR at ν = 2.14. The remarkable match in the angle dependence between \({V}_{\parallel }^{2\omega }\) and (b) η|| at different densities illustrates their correspondence relation. \({V}_{\parallel }^{2\omega }\) are measured at IAC = 100 nA, ηR are measured at IDC = 100 nA. All measurements are performed at B = 0 and T = 20 mK.
