{"intvolume":"        17","doi":"10.1038/s41467-026-71899-7","acknowledgement":"We appreciate technical support from Salvatore Bagiante, Evgeniia Volobueva, Lubuna Shafeek, Ali Bangura, and Zoltán Köllö, and scientific discussions with Daniel Agterberg, Johnpierre Paglione, Qimiao Si, Josephine Yu and Yue Yu. V.Z., A.N., M.N., and K.A.M. acknowledge funding received from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (TROPIC-101078696). V.Z., A.N., M.N., and K.A.M. thank the ISTA Nanofabrication Facility for technical support. B.J.R. acknowledges funding from the Office of Basic Energy Sciences of the United States Department of Energy under award number DE-SC0020143 for data analysis and writing. The National High Magnetic Field Laboratory is supported by the National Science Foundation through NSF/DMR-2128556*, the State of Florida, and the U.S. Department of Energy. A.S. acknowledges support from the DOE/BES “Science of 100 T” grant. A.S. thanks Downtown Subscription in Santa Fe, NM, for their patience in hosting him. Sample preparation and characterization were supported by the NSF through DMR-2105191.","has_accepted_license":"1","status":"public","quality_controlled":"1","article_processing_charge":"Yes","OA_place":"publisher","related_material":{"record":[{"relation":"research_data","id":"21174","status":"public"}]},"article_number":"3742","DOAJ_listed":"1","type":"journal_article","author":[{"full_name":"Zambra, Valeska","orcid":"0000-0002-8806-5719","id":"467ed36b-dc96-11ea-b7c8-b043a380b282","first_name":"Valeska","last_name":"Zambra"},{"full_name":"Nathwani, Amit","first_name":"Amit","id":"1a362536-4d02-11f1-8543-8351136efc50","last_name":"Nathwani"},{"orcid":"0000-0002-2111-4846","full_name":"Nauman, Muhammad","id":"32c21954-2022-11eb-9d5f-af9f93c24e71","first_name":"Muhammad","last_name":"Nauman"},{"last_name":"Lewin","full_name":"Lewin, Sylvia K.","first_name":"Sylvia K."},{"last_name":"Frank","first_name":"Corey E.","full_name":"Frank, Corey E."},{"first_name":"Nicholas P.","full_name":"Butch, Nicholas P.","last_name":"Butch"},{"last_name":"Shekhter","first_name":"Arkady","full_name":"Shekhter, Arkady"},{"first_name":"B. J.","full_name":"Ramshaw, B. J.","last_name":"Ramshaw"},{"last_name":"Modic","first_name":"Kimberly A","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147","full_name":"Modic, Kimberly A"}],"publication_status":"published","_id":"21845","oa":1,"oa_version":"Published Version","volume":17,"file_date_updated":"2026-05-11T06:32:12Z","department":[{"_id":"KiMo"},{"_id":"GradSch"}],"citation":{"ista":"Zambra V, Nathwani A, Nauman M, Lewin SK, Frank CE, Butch NP, Shekhter A, Ramshaw BJ, Modic KA. 2026. Giant transverse magnetic fluctuations at the edge of re-entrant superconductivity in UTe2. Nature Communications. 17, 3742.","mla":"Zambra, Valeska, et al. “Giant Transverse Magnetic Fluctuations at the Edge of Re-Entrant Superconductivity in UTe2.” <i>Nature Communications</i>, vol. 17, 3742, Springer Nature, 2026, doi:<a href=\"https://doi.org/10.1038/s41467-026-71899-7\">10.1038/s41467-026-71899-7</a>.","ieee":"V. Zambra <i>et al.</i>, “Giant transverse magnetic fluctuations at the edge of re-entrant superconductivity in UTe2,” <i>Nature Communications</i>, vol. 17. Springer Nature, 2026.","chicago":"Zambra, Valeska, Amit Nathwani, Muhammad Nauman, Sylvia K. Lewin, Corey E. Frank, Nicholas P. Butch, Arkady Shekhter, B. J. Ramshaw, and Kimberly A Modic. “Giant Transverse Magnetic Fluctuations at the Edge of Re-Entrant Superconductivity in UTe2.” <i>Nature Communications</i>. Springer Nature, 2026. <a href=\"https://doi.org/10.1038/s41467-026-71899-7\">https://doi.org/10.1038/s41467-026-71899-7</a>.","ama":"Zambra V, Nathwani A, Nauman M, et al. Giant transverse magnetic fluctuations at the edge of re-entrant superconductivity in UTe2. <i>Nature Communications</i>. 2026;17. doi:<a href=\"https://doi.org/10.1038/s41467-026-71899-7\">10.1038/s41467-026-71899-7</a>","apa":"Zambra, V., Nathwani, A., Nauman, M., Lewin, S. K., Frank, C. E., Butch, N. P., … Modic, K. A. (2026). Giant transverse magnetic fluctuations at the edge of re-entrant superconductivity in UTe2. <i>Nature Communications</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41467-026-71899-7\">https://doi.org/10.1038/s41467-026-71899-7</a>","short":"V. Zambra, A. Nathwani, M. Nauman, S.K. Lewin, C.E. Frank, N.P. Butch, A. Shekhter, B.J. Ramshaw, K.A. Modic, Nature Communications 17 (2026)."},"PlanS_conform":"1","project":[{"name":"Gaining leverage with spin liquids and superconductors","_id":"bd968c70-d553-11ed-ba76-cde40b0aba64","grant_number":"101078696"}],"arxiv":1,"acknowledged_ssus":[{"_id":"NanoFab"}],"publisher":"Springer Nature","external_id":{"arxiv":["2506.08984"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"original","year":"2026","scopus_import":"1","day":"29","title":"Giant transverse magnetic fluctuations at the edge of re-entrant superconductivity in UTe2","date_created":"2026-05-10T22:02:15Z","publication":"Nature Communications","date_updated":"2026-05-11T06:36:00Z","ddc":["530"],"month":"04","date_published":"2026-04-29T00:00:00Z","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"corr_author":"1","language":[{"iso":"eng"}],"abstract":[{"text":"UTe2 exhibits the remarkable phenomenon of re-entrant superconductivity, whereby the zero-resistance state reappears above 40 tesla after being suppressed with a field of around 10 tesla. One potential pairing mechanism, invoked in the related re-entrant superconductors UCoGe and URhGe, involves transverse fluctuations of a ferromagnetic order parameter. However, the requisite ferromagnetic order—present in both UCoGe and URhGe—is absent in UTe2, and neutron scattering shows instead that the magnetic susceptibility is peaked at an antiferromagnetic wavevector. Here, we measure the magnetotropic susceptibility of UTe2 across two field-angle planes. This quantity is sensitive to the magnetic susceptibility in a direction transverse to the applied magnetic field—a quantity that is not accessed in conventional magnetization measurements. We observe a very large decrease in the magnetotropic susceptibility over a broad range of field orientations, indicating a large increase in the transverse magnetic susceptibility. Because our technique probes the magnetic susceptibility in the long wavelength (q = 0) limit, this suggests that the strong transverse susceptibility arises from ferromagnetic spin fluctuations. These ferromagnetic fluctuations are likely important for understanding the pairing mechanism in UTe2, as all three superconducting phases of UTe2 surround this region of enhanced susceptibility in the field-angle phase diagram.","lang":"eng"}],"publication_identifier":{"eissn":["2041-1723"]},"OA_type":"gold","file":[{"content_type":"application/pdf","success":1,"file_id":"21850","file_name":"2026_NatureComm_Zambra.pdf","checksum":"8cb95b033ad2a1a7a8181f6f078c05b5","creator":"dernst","date_updated":"2026-05-11T06:32:12Z","file_size":1784917,"relation":"main_file","access_level":"open_access","date_created":"2026-05-11T06:32:12Z"}]}