Extended Data Fig. 1: Further examples of viscous photoconductivity.
From: Viscous terahertz photoconductivity of hydrodynamic electrons in graphene
a, Differential resistance, \(\Delta {R}_{{{\rm{pc}}}}=d{V}_{{{\rm{pc}}}}/dI{| }_{I = {I}_{{{\rm{dc}}}}}-d{V}_{{{\rm{pc}}}}/dI{| }_{I = 0}\), across the PC, induced by the DC current, Idc, as a function of DC power PDC at different n, relative to its zero-bias value. b, Examples of the PC photoresistance ΔRpc vs P0 measured at different n. The positive slope of ΔRpc vs P0 at PDC > 1 μW and n = 0.5 × 1012 cm−2 suggests the presence of an additional mechanism contributing to resistance that we currently attribute to the proximity to the out-of-equilibrium Schwinger regime57. c, Calibration curves P0 vs PDC obtained by relating the resistance drop from (a) and (b). W = 0.31μm. All measurements are done at T = 2K. In the main text, Pabs ≡ PDC.
