Extended Data Fig. 10: DC bias current dependence in the second device.
From: Superfluid stiffness of magic-angle twisted bilayer graphene

a, IDC dependence of the DC resistance dV/dIDC at VBG = −7.3 V. Inset depicts the DC resistance as a function of IDC and VBG. b, IDC dependence of fr at VBG = −7.3 V. The blue dashed curve is the quadratic fit. Inset depicts fr as a function of IDC and VBG. c, IDC dependence of the DC resistance over the hole-doped SC region. d, IDC dependence of fr(I) − fr(I = 0) over the hole-doped SC region using a logarithmic scale. The black dashed line indicates the quadratic dependence.