S. M. Thomas, C. S. Kengle, W. Simeth, Chan-young Lim, Z. W. Riedel, K. Allen, A. Schmidt, M. Ruf, Seonggeon Gim, J. D. Thompson, F. Ronning, A. O. Scheie, C. Lane, J. D. Denlinger, S. Blanco-Canosa, Jian-Xin Zhu, E. D. Bauer, P. F. S. Rosa
{"title":"新kagome材料UV6Sn6的异常磁性","authors":"S. M. Thomas, C. S. Kengle, W. Simeth, Chan-young Lim, Z. W. Riedel, K. Allen, A. Schmidt, M. Ruf, Seonggeon Gim, J. D. Thompson, F. Ronning, A. O. Scheie, C. Lane, J. D. Denlinger, S. Blanco-Canosa, Jian-Xin Zhu, E. D. Bauer, P. F. S. Rosa","doi":"10.1038/s41535-025-00783-2","DOIUrl":null,"url":null,"abstract":"<p>Materials in the family <i>R</i>V<sub>6</sub>Sn<sub>6</sub> (<i>R</i> = rare earth) provide a unique platform to investigate the interplay between local moments from <i>R</i> layers and nonmagnetic vanadium kagome layers. Yet, the investigation of actinide members remains scarce. Here we report the synthesis of UV<sub>6</sub>Sn<sub>6</sub> single crystals through the self-flux technique. Physical property measurements reveal two uranium-driven antiferromagnetic transitions at <i>T</i><sub><i>N</i>1</sub> = 29 K and <i>T</i><sub><i>N</i>2</sub> = 24 K, a complex field-temperature phase diagram, and unusual negative domain-wall magnetoresistance. Specific heat and angle-resolved photoemission spectroscopy measurements show a moderate <i>f</i>-electron enhancement to the density of states at the Fermi level (<i>E</i><sub><i>F</i></sub>), whereas our band structure calculations place the vanadium flat bands 0.25 eV above <i>E</i><sub><i>F</i></sub>. These findings point to a materials opportunity to expand the uranium 166 family with the goal of enhancing correlations by tuning 5<i>f</i> and 3<i>d</i> flat bands to <i>E</i><sub><i>F</i></sub>.</p>","PeriodicalId":19283,"journal":{"name":"npj Quantum Materials","volume":"47 1","pages":""},"PeriodicalIF":5.4000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Unusual 5f magnetism in new kagome material UV6Sn6\",\"authors\":\"S. M. Thomas, C. S. Kengle, W. Simeth, Chan-young Lim, Z. W. Riedel, K. Allen, A. Schmidt, M. Ruf, Seonggeon Gim, J. D. Thompson, F. Ronning, A. O. Scheie, C. Lane, J. D. Denlinger, S. Blanco-Canosa, Jian-Xin Zhu, E. D. Bauer, P. F. S. Rosa\",\"doi\":\"10.1038/s41535-025-00783-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Materials in the family <i>R</i>V<sub>6</sub>Sn<sub>6</sub> (<i>R</i> = rare earth) provide a unique platform to investigate the interplay between local moments from <i>R</i> layers and nonmagnetic vanadium kagome layers. Yet, the investigation of actinide members remains scarce. Here we report the synthesis of UV<sub>6</sub>Sn<sub>6</sub> single crystals through the self-flux technique. Physical property measurements reveal two uranium-driven antiferromagnetic transitions at <i>T</i><sub><i>N</i>1</sub> = 29 K and <i>T</i><sub><i>N</i>2</sub> = 24 K, a complex field-temperature phase diagram, and unusual negative domain-wall magnetoresistance. Specific heat and angle-resolved photoemission spectroscopy measurements show a moderate <i>f</i>-electron enhancement to the density of states at the Fermi level (<i>E</i><sub><i>F</i></sub>), whereas our band structure calculations place the vanadium flat bands 0.25 eV above <i>E</i><sub><i>F</i></sub>. These findings point to a materials opportunity to expand the uranium 166 family with the goal of enhancing correlations by tuning 5<i>f</i> and 3<i>d</i> flat bands to <i>E</i><sub><i>F</i></sub>.</p>\",\"PeriodicalId\":19283,\"journal\":{\"name\":\"npj Quantum Materials\",\"volume\":\"47 1\",\"pages\":\"\"},\"PeriodicalIF\":5.4000,\"publicationDate\":\"2025-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"npj Quantum Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1038/s41535-025-00783-2\",\"RegionNum\":1,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"npj Quantum Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1038/s41535-025-00783-2","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Unusual 5f magnetism in new kagome material UV6Sn6
Materials in the family RV6Sn6 (R = rare earth) provide a unique platform to investigate the interplay between local moments from R layers and nonmagnetic vanadium kagome layers. Yet, the investigation of actinide members remains scarce. Here we report the synthesis of UV6Sn6 single crystals through the self-flux technique. Physical property measurements reveal two uranium-driven antiferromagnetic transitions at TN1 = 29 K and TN2 = 24 K, a complex field-temperature phase diagram, and unusual negative domain-wall magnetoresistance. Specific heat and angle-resolved photoemission spectroscopy measurements show a moderate f-electron enhancement to the density of states at the Fermi level (EF), whereas our band structure calculations place the vanadium flat bands 0.25 eV above EF. These findings point to a materials opportunity to expand the uranium 166 family with the goal of enhancing correlations by tuning 5f and 3d flat bands to EF.
期刊介绍：
npj Quantum Materials is an open access journal that publishes works that significantly advance the understanding of quantum materials, including their fundamental properties, fabrication and applications.
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