Nearly ferromagnetic spin-triplet superconductivity

Ran, Sheng; Eckberg, Chris; Ding, Qing-Ping; Furukawa, Yuji; Metz, Tristin; Saha, Shanta R.; Liu, I-Lin; Zic, Mark; Kim, Hyunsoo; Paglione, Johnpierre; Butch, Nicholas P.

doi:10.1126/science.aav8645

Title: Nearly ferromagnetic spin-triplet superconductivity

Journal Article · Thu Aug 15 00:00:00 EDT 2019 · Science

DOI:https://doi.org/10.1126/science.aav8645· OSTI ID:1557392

; Eckberg, Chris;

; Furukawa, Yuji; Metz, Tristin; Saha, Shanta R.;

;

Spin-triplet superconductors potentially host topological excitations that are of interest for quantum information processing. We discuss the discovery of spin-triplet superconductivity in UTe₂, 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 UTe₂is related to ferromagnetic superconductors such as UGe₂, URhGe, and UCoGe. Yet, the lack of magnetic order and the observation of quantum critical scaling place UTe₂at 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.

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Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE; US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF)

Grant/Contract Number:: AC02-07CH11358; DMR-1610349; FA9550-14-1-0332; GBMF4419; SC0019154

OSTI ID:: 1557392

Alternate ID(s):: OSTI ID: 1560360

Report Number(s):: IS-J-10006; /sci/365/6454/684.atom

Journal Information:: Science, Journal Name: Science Vol. 365 Journal Issue: 6454; ISSN 0036-8075

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 230 works

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