Cited by 98Rare-earth and actinide compoundsPhysics of Superconductivity and MagnetismTopological Materials and Phenomena

Single thermodynamic transition at 2 K in superconducting UTe2 single crystals

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Rosa, Priscila F. S., Weiland, Ashley, Fender, Shannon S., Scott, Brian L., Ronning, Filip, Thompson, Joe D., Bauer, Eric D., Thomas, Sean M.·2022·Communications Materials

Abstract

UTe 2 is a newly-discovered unconventional superconductor wherein multicomponent topological superconductivity is anticipated based on the presence of two superconducting transitions and time-reversal symmetry breaking in the superconducting state. The observation of two superconducting transitions, however, remains controversial. Here we demonstrate that UTe 2 single crystals displaying an optimal superconducting transition temperature at 2 K exhibit a single transition and remarkably high quality supported by their large residual resistance ratio and small residual heat capacity in the superconducting state. Our results shed light on the intrinsic superconducting properties of UTe 2 and bring into question whether UTe 2 is a multicomponent superconductor at ambient pressure.

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Crossref · 10.1038/s43246-022-00254-2

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  • UTe2 crystals with no SC1 transition usually have RRR ≲ 5, which implies a high degree of disorder.

    “UTe2 crystals with no SC1 transition usually have a RRR ≲ 5, which implies a high degree of disorder33,34.”

    From Orphan high field superconductivity in non-superconducting uranium ditelluride (2024) · cites this paper as [34]

    The Electrical Resistivity section reports RRR = 2 for one non-superconducting sample, s7. The Discussion treats low RRR as an indicator of disorder. The paper does not establish that crystals without an SC1 transition *usually* have RRR ≲ 5. (LLM, conf=0.84)

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1 of the 47 references couldn’t be matched to a known paper.

Research works printed but not linked: 5

  1. Aoki, D. et al. Unconventional Superconductivity in Heavy Fermion UTe2. J. Phys. Soc. Japan 88, 043702 (2019).
  2. Sundar, S. et al. Coexistence of ferromagnetic fluctuations and superconductivity in the actinide superconductor UTe2. Phys. Rev. B 100, 140502 (2019).
  3. Thomas, S. M. et al. Spatially inhomogeneous superconductivity in UTe2. Phys. Rev.B 104, 224501 (2021).
  4. Aoki, D. et al. Unconventional superconductivity in ute2. J. Phys. Condens. Matter 34, 243002 (2022).
  5. Miao, L. et al. Low energy band structure and symmetries of ute2 from angle- resolved photoemission spectroscopy. Phys. Rev Lett. 124, 076401 (2020).

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Authors
Rosa, P. F. S., Weiland, A., Fender, S. S., Scott, B. L., Ronning, F., Thompson, J. D., Bauer, E. D., & Thomas, S. M.
Affiliations
Los Alamos National Laboratory (US)
Corresponding author
Rosa, Priscila F. S.
Venue
Communications Materials
Published
2022-05-23
Volume
3
Issue
1
ISSN
2662-4443 (ISSN-L)
OpenAlex
W4281286554
Cited by
97
References
47
Citations by year
2026: 8 · 2025: 25 · 2024: 29 · 2023: 20 · 2022: 15
FWCI
8.31
Type
journal article
Language
en
Open access
Locations
  • Communications Materials (publishedVersion, cc-by)
  • arXiv (Cornell University) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • DOE | Office of Science (Quantum Science Center)
  • DOE | LDRD | Los Alamos National Laboratory
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 › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
Keywords
UTe2, unconventional superconductivity, topological superconductivity, time-reversal symmetry breaking, residual resistivity ratio, single crystals, superconducting transition temperature

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