Nearly ferromagnetic spin-triplet superconductivity.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 31416960.
- Also identified by DOI 10.1126/science.aav8645.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Spin-triplet superconductors potentially host topological excitations that are of interest for quantum information processing. We report the discovery of spin-triplet superconductivity in UTe<sub>2</sub>, featuring a transition temperature of 1.6 kelvin and a very large and anisotropic upper critical field exceeding 40 teslas. This superconducting phase stability suggests that UTe<sub>2</sub> is related to ferromagnetic superconductors such as UGe<sub>2</sub>, URhGe, and UCoGe. However, the lack of magnetic order and the observation of quantum critical scaling place UTe<sub>2</sub> at the paramagnetic end of this ferromagnetic superconductor series. A large intrinsic zero-temperature reservoir of ungapped fermions indicates a highly unconventional type of superconducting pairing.