Conventional superconductivity in the doped kagome superconductor Cs(V0.86Ta0.14)3Sb5 from vortex lattice studies

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dc.citation.articleNumber6467en_US
dc.citation.journalTitleNature Communicationsen_US
dc.citation.volumeNumber15en_US
dc.contributor.authorXie, Yaofengen_US
dc.contributor.authorChalus, Nathanen_US
dc.contributor.authorWang, Zhiweien_US
dc.contributor.authorYao, Weiliangen_US
dc.contributor.authorLiu, Jinjinen_US
dc.contributor.authorYao, Yuguien_US
dc.contributor.authorWhite, Jonathan S.en_US
dc.contributor.authorDeBeer-Schmitt, Lisa M.en_US
dc.contributor.authorYin, Jia-Xinen_US
dc.contributor.authorDai, Pengchengen_US
dc.contributor.authorEskildsen, Morten Ringen_US
dc.date.accessioned2024-08-29T21:11:49Zen_US
dc.date.available2024-08-29T21:11:49Zen_US
dc.date.issued2024en_US
dc.description.abstractA hallmark of unconventional superconductors is a complex electronic phase diagram where intertwined orders of charge-spin-lattice degrees of freedom compete and coexist. While the kagome metals such as CsV3Sb5 also exhibit complex behavior, involving coexisting charge density wave order and superconductivity, much is unclear about the microscopic origin of the superconducting pairing. We study the vortex lattice in the superconducting state of Cs(V0.86Ta0.14)3Sb5, where the Ta-doping suppresses charge order and enhances superconductivity. Using small-angle neutron scattering, a strictly bulk probe, we show that the vortex lattice exhibits a strikingly conventional behavior. This includes a triangular symmetry with a period consistent with 2e-pairing, a field dependent scattering intensity that follows a London model, and a temperature dependence consistent with a uniform superconducting gap. Our results suggest that optimal bulk superconductivity in Cs(V1−xTax)3Sb5 arises from a conventional Bardeen-Cooper-Schrieffer electron-lattice coupling, different from spin fluctuation mediated unconventional copper- and iron-based superconductors.en_US
dc.identifier.citationXie, Y., Chalus, N., Wang, Z., Yao, W., Liu, J., Yao, Y., White, J. S., DeBeer-Schmitt, L. M., Yin, J.-X., Dai, P., & Eskildsen, M. R. (2024). Conventional superconductivity in the doped kagome superconductor Cs(V0.86Ta0.14)3Sb5 from vortex lattice studies. Nature Communications, 15(1), 6467. https://doi.org/10.1038/s41467-024-50856-2en_US
dc.identifier.digitals41467-024-50856-2en_US
dc.identifier.doihttps://doi.org/10.1038/s41467-024-50856-2en_US
dc.identifier.urihttps://hdl.handle.net/1911/117743en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleConventional superconductivity in the doped kagome superconductor Cs(V0.86Ta0.14)3Sb5 from vortex lattice studiesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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