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Updated: Apr 30, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Correlation between superfluid density and transition temperature in infinite-layer nickelate superconductor Nd1-x Sr
Zhijie Li1, Ruozhou Zhang1, Minghui Xu2
1State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
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 Nd0.8Sr0.2NiO2. 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.
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