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Extreme magnetic field-boosted superconductivity.

ABSTRACT: Applied magnetic fields underlie exotic quantum states, such as the fractional quantum Hall effect1 and Bose-Einstein condensation of spin excitations2. Superconductivity, however, is inherently antagonistic towards magnetic fields. Only in rare cases3-5 can these effects be mitigated over limited fields, leading to re-entrant superconductivity. Here, we report the coexistence of multiple high-field re-entrant superconducting phases in the spin-triplet superconductor UTe2 (ref. 6). We observe superconductivity in the highest magnetic field range identified for any re-entrant superconductor, beyond 65 T. Although the stability of superconductivity in these high magnetic fields challenges current theoretical models, these extreme properties seem to reflect a new kind of exotic superconductivity rooted in magnetic fluctuations7 and boosted by a quantum dimensional crossover8.

SUBMITTER: Ran S

PROVIDER: S-EPMC8201648 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Extreme magnetic field-boosted superconductivity.

Ran Sheng S Liu I-Lin IL Eo Yun Suk YS Campbell Daniel J DJ Neves Paul M PM Fuhrman Wesley T WT Saha Shanta R SR Eckberg Christopher C Kim Hyunsoo H Graf David D Balakirev Fedor F Singleton John J Paglione Johnpierre J Butch Nicholas P NP

Nature physics 20190101 12

Applied magnetic fields underlie exotic quantum states, such as the fractional quantum Hall effect1 and Bose-Einstein condensation of spin excitations2. Superconductivity, however, is inherently antagonistic towards magnetic fields. Only in rare cases3-5 can these effects be mitigated over limited fields, leading to re-entrant superconductivity. Here, we report the coexistence of multiple high-field re-entrant superconducting phases in the spin-triplet supercondu ...[more]

PMID: 34131432

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