Cited by 169Rare-earth and actinide compoundsPhysics of Superconductivity and MagnetismAdvanced Condensed Matter Physics

Field-Reentrant Superconductivity Close to a Metamagnetic Transition in the Heavy-Fermion Superconductor UTe 2

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Knebel, Georg, Knafo, William, Pourret, Alexandre, Niu, Qun, Vališka, Michal, Braithwaite, Daniel, Lapertot, Gérard, Nardone, Marc +7 more·2019·Journal of the Physical Society of Japan

Abstract

We present a study of the upper critical field of the newly discovered heavy fermion superconductor UTe$_2$ by magnetoresistivity measurements in pulsed magnetic fields up to 60~T and static magnetic fields up to 35~T. We show that superconductivity survives up to the metamagnetic transition at $H_{\rm m} \approx 35$~T at low temperature. Above $H_{\rm m}$ superconductivity is suppressed. At higher temperature superconductivity is enhanced under magnetic field leading to reentrance of superconductivity or an almost temperature independent increase of $H_{\rm c2}$. By studying the angular dependence of the upper critical field close to the $b$ axis (hard magnetization axis) we show that the maximum of the reentrant superconductivity temperature is depinned from the metamagnetic field. A key ingredient for the field-reinforcement of superconductivity on approaching $H_{\rm m}$ appears to be an immediate interplay with magnetic fluctuations and a possible Fermi-surface reconstruction.

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Crossref · 10.7566/jpsj.88.063707

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  • The oSCFP phase in Orphan UTe2 has a narrower angular range than typical SCFP, which extends from 25° to 42° in crystals with higher RRR.

    “The narrower angular range of the oSCFP is striking when compared to typical SCFP, which extends from 25o to 42o in crystals with higher RRR (Fig. 2b, see Fig. S4 in Supplementary Information for comparison with published data3,35,36,41).”

    From Orphan high field superconductivity in non-superconducting uranium ditelluride (2024) · cites this paper as [41]

    The angular-dependence results (p. 3) discuss superconductivity near the b-axis, including its suppression when the field is rotated toward the a-axis. Neither those passages nor the searched passages on crystal quality and tilted fields establish a 25°–42° range for typical SCFP in higher-RRR crystals. The paper also does not address the comparison with oSCFP in Orphan UTe2. (LLM, conf=0.76)

    Experimental — accuracy not yet measured

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Authors
Knebel, G., Knafo, W., Pourret, A., Niu, Q., Vališka, M., Braithwaite, D., Lapertot, G., Nardone, M., Zitouni, A., Mishra, S., Sheikin, I., Seyfarth, G., Brison, J.-P., Aoki, D., & Flouquet, J.
Affiliations
  • Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
  • Centre National de la Recherche Scientifique (FR)
Venue
Journal of the Physical Society of Japan
Published
2019-06-15
Volume
88
Issue
6
Pages
063707
ISSN
  • 0031-9015 (ISSN-L)
  • 1347-4073
OpenAlex
W2946406040
Cited by
168
References
26
Citations by year
2026: 10 · 2025: 23 · 2024: 26 · 2023: 22 · 2022: 27 · 2021: 28 · 2020: 21 · 2019: 11
FWCI
12.70
Type
journal article
Language
en
Open access
Locations
  • Journal of the Physical Society of Japan (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • HAL (submittedVersion)
  • arXiv (Cornell University)
Funders
  • Agence Nationale de la Recherche (ANR-11-IDEX-0002-02, ANR-10-LABX-0037-NEXT, Fermi-NESt)
  • Japan Society for the Promotion of Science (JP15H05882, JP15H05884, JP15K21732, JP16H04006, JP15H05745, JP19H00646)
Topics
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Rare-earth and actinide compounds
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Physics of Superconductivity and Magnetism
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
Keywords
metamagnetic transition, heavy fermion superconductivity, UTe2, uranium telluride, superconducting transition temperature

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