Pair wave function symmetry in UTe2 from zero-energy surface state visualization

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dc.contributor.authorGu, Qiangqiangen
dc.contributor.authorWang, Shuqiuen
dc.contributor.authorCarroll, Joseph P.en
dc.contributor.authorZhussupbekov, Kuanyshen
dc.contributor.authorBroyles, Christopheren
dc.contributor.authorRan, Shengen
dc.contributor.authorButch, Nicholas P.en
dc.contributor.authorHorn, Jarryd A.en
dc.contributor.authorSaha, Shantaen
dc.contributor.authorPaglione, Johnpierreen
dc.contributor.authorLiu, Xiaolongen
dc.contributor.authorDavis, J. C. Séamusen
dc.contributor.authorLee, Dung-Haien
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderU.S. Department of Energyen
dc.contributor.funderGordon and Betty Moore Foundationen
dc.contributor.funderNational Institute of Standards and Technologyen
dc.contributor.funderMaryland Quantum Materials Centeren
dc.contributor.funderNational Science Foundationen
dc.contributor.funderEuropean Research Councilen
dc.contributor.funderRoyal Societyen
dc.date.accessioned2025-07-02T15:06:54Z
dc.date.available2025-07-02T15:06:54Z
dc.date.issued2025-05-29en
dc.description.abstractAlthough nodal spin-triplet topological superconductivity appears probable in uranium ditelluride (UTe2), its superconductive order parameter Δk remains unestablished. In theory, a distinctive identifier would be the existence of a superconductive topological surface band, which could facilitate zero-energy Andreev tunneling to an s-wave superconductor and also distinguish a chiral from a nonchiral Δk through enhanced s-wave proximity. In this study, we used s-wave superconductive scan tips and detected intense zero-energy Andreev conductance at the UTe2 (0-11) termination surface. Imaging revealed subgap quasiparticle scattering interference signatures with a-axis orientation. The observed zero-energy Andreev peak splitting with enhanced s-wave proximity signifies that Δk of UTe2 is a nonchiral state: B1u, B2u, or B3u. However, if the quasiparticle scattering along the a axis is internodal, then a nonchiral B3u state is the most consistent for UTe2.en
dc.description.sponsorshipU.S. Department of Energy (DE-SC-0019154; DESC0025021; DE-AC02-05-CH11231); Gordon and Betty Moore Foundation (GBMF9071; GBMF9457); National Science Foundation (DMR-2236528); European Research Council (Award DLV-788932); Royal Society (R64897); Science Foundation Ireland (SFI 17/RP/54450)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGu, Q., Wang, S., Carroll, J. P., Zhussupbekov, K., Broyles, C., Ran, S., Butch, N. P., Horn, J. A., Saha, S., Paglione, J. and Liu, X. (2025) 'Pair wave function symmetry in UTe2 from zero-energy surface state visualization', Science, 388(6750), pp.938-944. https://doi.org/10.1126/science.adk7219en
dc.identifier.doi10.1126/science.adk7219en
dc.identifier.eissn1095-9203en
dc.identifier.endpage944en
dc.identifier.issn0036-8075en
dc.identifier.issued6750en
dc.identifier.journaltitleScienceen
dc.identifier.startpage938en
dc.identifier.urihttps://hdl.handle.net/10468/17665
dc.identifier.volume388en
dc.language.isoenen
dc.publisherAmerican Association for the Advancement of Scienceen
dc.relation.ispartofScienceen
dc.rights© 2025, the Authors. Published under license by the American Association for the Advancement of Science.en
dc.subjectUranium ditelluride (UTe2)en
dc.subjectSuperconductive order parameter Δken
dc.subjectPair wave function symmetryen
dc.titlePair wave function symmetry in UTe2 from zero-energy surface state visualizationen
dc.typeArticle (peer-reviewed)en
dc.typejournal-articleen
oaire.citation.issue6750en
oaire.citation.volume388en
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