Microscopic Imaging Homogeneous and Single Phase Superfluid Density in UTe_{2}.
Journal
Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141
Informations de publication
Date de publication:
12 May 2023
12 May 2023
Historique:
received:
17
10
2022
revised:
21
12
2022
accepted:
04
04
2023
medline:
27
5
2023
pubmed:
27
5
2023
entrez:
27
5
2023
Statut:
ppublish
Résumé
Odd-parity superconductor UTe_{2} shows spontaneous time-reversal symmetry breaking and multiple superconducting phases, which imply chiral superconductivity, but only in a subset of samples. Here we microscopically observe a homogeneous superfluid density n_{s} on the surface of UTe_{2} and an enhanced superconducting transition temperature near the edges. We also detect vortex-antivortex pairs even at zero magnetic field, indicating the existence of a hidden internal field. The temperature dependence of n_{s}, determined independent of sample geometry, does not support point nodes along the b axis for a quasi-2D Fermi surface and provides no evidence for multiple phase transitions in UTe_{2}.
Identifiants
pubmed: 37243629
doi: 10.1103/PhysRevLett.130.196003
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM