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<p>Magnetic fields typically suppress superconductivity through Pauli and orbital limiting effects. However, there are rare instances of magnetic-field-induced superconductivity, as observed in Chevrel-phase compounds, organic conductors, uranium-based heavy-fermion systems, and moiré graphene—although these materials possess inherently low superconducting transition temperatures (<i>T</i><sub>c</sub>). Here, we demonstrate high-field-stabilized superconductivity in a class of materials recently shown to have significantly higher <i>T</i><sub>c</sub> values (up to 40 K): the infinite-layer nickelates. We show that both the low-field and high-field superconducting states can be understood in terms of a field-compensation mechanism, better known as the Jaccarino-Peter effect. These findings demonstrate the possibility of achieving substantially enhanced upper critical fields in high-temperature superconductors.</p>

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

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月31日

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  • Km Rubi,
  • King Yau Yip,
  • Elizabeth Krenkel,
  • Nurul Fitriyah,
  • Xing Gao,
  • Saurav Prakash,
  • S. Lin Er Chow,
  • Chi Sin Tang,
  • Tsz Fung Poon,
  • Swee K. Goh,
  • Sean M. Thomas,
  • Adam P. Dioguardi,
  • Oscar E. Ayala-Valenzuela,
  • Mark B. H. Breese,
  • Mun K. Chan,
  • David Graf,
  • A. Ariando,
  • Neil Harrison

摘要

Magnetic fields typically suppress superconductivity through Pauli and orbital limiting effects. However, there are rare instances of magnetic-field-induced superconductivity, as observed in Chevrel-phase compounds, organic conductors, uranium-based heavy-fermion systems, and moiré graphene—although these materials possess inherently low superconducting transition temperatures (Tc). Here, we demonstrate high-field-stabilized superconductivity in a class of materials recently shown to have significantly higher Tc values (up to 40 K): the infinite-layer nickelates. We show that both the low-field and high-field superconducting states can be understood in terms of a field-compensation mechanism, better known as the Jaccarino-Peter effect. These findings demonstrate the possibility of achieving substantially enhanced upper critical fields in high-temperature superconductors.