We perform a differential resistance study in the hydrodynamic regime of an electron liquid in GaAs/AlGaAs quantum wells. At zero magnetic field $\left(B\right)$ a Lorentzian profile occurs in the nonlinear transport driven by a U-turn (ac) current loop, in $(\mathrm{ac}+\mathrm{dc})$ measurements a minimum deepens with the external dc current bias $\left(j_{\text{dc}}\right)$. Our analysis shows that the observed electronic transport valley induced by $j_{\text{dc}}$ is attributed to the Joule heating effect on the electron temperature $\left(T_e\right)$ of the electron liquid. Quantitatively, we demonstrate that the viscosity resistivity $\left(\mathrm{\Delta }\rho \right)$ is proportional to $T^{-2}$ and is consistent with the dc-current-induced electronic Gurzhi effect in various configurations of measurement.

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• Magnetoresistance
• Magnetotransport
• Mesoscopics
• Quantum fluids & solids