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arXiv · 2508.16290

High-field-stabilized reentrant superconductivity in infinite-layer nickelate thin films

Km Rubi·King Yau Yip·Elizabeth Krenkel·Nurul Fitriyah·Xing Gao·Saurav Prakash·S. Lin Er Chow·Tsz Fung Poon·Mun K. Chan·David Graf·A. Ariando·Neil Harrison
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Abstract

Magnetic fields typically suppress superconductivity through Pauli and orbital limiting effects. However, there are rare instances of magnetic-field-induced superconductivity, as seen in Chevrel phase compounds [1], organic conductors [2], uranium-based heavy-fermion systems [3, 4], and moire graphene [5], though these materials possess inherently low superconducting transition temperatures (Tc). Here, we demonstrate high field-stabilized superconductivity in a class of materials with a significantly higher Tc (up to 40 K): the infinite-layer nickelates [6]. Both low-field and high-field superconducting states can be plausibly explained by a compensation mechanism akin to the Jaccarino-Peter effect. These findings demonstrate the possibility of achieving substantially enhanced upper critical fields in high-temperature superconductors.

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Km Rubi, King Yau Yip, Elizabeth Krenkel, Nurul Fitriyah, Xing Gao, Saurav Prakash, S. Lin Er Chow, Tsz Fung Poon, Mun K. Chan, David Graf, A. Ariando, Neil Harrison. 2025-08-22. High-field-stabilized reentrant superconductivity in infinite-layer nickelate thin films. https://arxiv.org/abs/2508.16290

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