Extreme magnetic field-boosted superconductivity in a high-temperature superconductor
cond-mat.supr-con
/ Authors
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
and 2 more authors
/ 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.