Abstract
The strong correlation between zero-temperature superfluid density ([Formula: see text]) and transition temperature ([Formula: see text]) is considered a hallmark of unconventional superconductivity. However, their relationship has yet to be unveiled in nickelates due to sample inhomogeneity. Here, we perform local susceptometry on an infinite-layer nickelate superconductor Nd(0.8)Sr(0.2)NiO(2). The sample shows inhomogeneous [Formula: see text] and [Formula: see text] at the micron scale. The spatial statistics for different scan areas reveal a linear dependence of local [Formula: see text] on [Formula: see text] for [Formula: see text] and a sublinear dependence for [Formula: see text]. Remarkably, the overall relationship is reminiscent of that reported in overdoped cuprate superconductors, hinting at a close connection between them.