Intertwined charge-density-wave order in vanadium-based kagome superconductors

Intertwined charge-density-wave order in vanadium-based kagome superconductors | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Physical Sciences - Article Intertwined charge-density-wave order in vanadium-based kagome superconductors Tao Wu, Kuanglv Sun, Linpeng Nie, Hongyu Li, Jiyin Zhao, Huachen Rao, and 6 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3757459/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted You are reading this latest preprint version Abstract In correlated quantum materials, the intertwinement of multiple orders leads to rich exotic quantum states of matter and emergent phenomena. Recently, the discovery of superconductivity and charge density waves (CDWs) with multiple symmetry breakings in kagome superconductors A V 3 Sb 5 ( A = K, Rb, Cs) offers a new territory to study intertwined orders. Elastoresistance, which detects the electric resistance in response to an applied strain, offers a unique method to investigate the evolution of intertwined orders in A V 3 Sb 5 . Here, we perform a systematic measurement of elastoresistance in two hole-doped CsV 3 Sb 5 series: CsV 3 Sb 5-y Sn y (y = 0.04 and 0.06) and CsV 3-x Ti x Sb 5 (x = 0.03, 0.05 and 0.09). Below the CDW transition temperature ( T CDW ), the elastoresistance coefficient in all samples undergoes a jump-like transition at T CDW and then another kink-like transition at a lower temperature ( T* ). Based on a Ginzburg-Landau analysis of CDW order, the jump-like transition at T CDW is well explained by a triple- Q CDW driven by lattice instability, while the kink-like transition around T* is ascribed to an interaction-driven quantum melting of triple- Q CDW, which leads to a nematic CDW state at low temperatures. Interestingly, the T* in all samples follows a perfect anti-correlation with the superconducting transition temperature ( T c ), indicating an intertwinement of superconductivity and nematic CDW. Strikingly, the elastoresistance coefficient of Sn-doped samples exhibits a distinct temperature dependence from that of pristine and Ti-doped samples above T CDW , which is ascribed to a charge stripe instability enhanced by Sn doping. Our present findings provide a new perspective to understand the intertwined orders in kagome superconductors A V 3 Sb 5 . Physical sciences/Physics/Condensed-matter physics/Superconducting properties and materials Physical sciences/Physics/Condensed-matter physics/Electronic properties and materials Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryMaterialselastoresistanceofCVS1215.docx Cite Share Download PDF Status: Under Review Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-3757459","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Physical Sciences - Article","associatedPublications":[],"authors":[{"id":269399717,"identity":"09dc77ba-8935-4f0d-9a8b-11c1680e5d28","order_by":0,"name":"Tao 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Materials","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"ejp","reportingPortfolio":"NPJ","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-3757459/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3757459/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003e\u003cstrong\u003eIn correlated quantum materials, the intertwinement of multiple orders leads to rich exotic quantum states of matter and emergent phenomena. Recently, the discovery of superconductivity and charge density waves (CDWs) with multiple symmetry breakings in kagome superconductors \u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eA\u003c/strong\u003e\u003c/em\u003e\u003cstrong\u003eV\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e3\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003eSb\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e5\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003e (\u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eA \u003c/strong\u003e\u003c/em\u003e\u003cstrong\u003e= K, Rb, Cs) offers a new territory to study intertwined orders. Elastoresistance, which detects the electric resistance in response to an applied strain, offers a unique method to investigate the evolution of intertwined orders in \u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eA\u003c/strong\u003e\u003c/em\u003e\u003cstrong\u003eV\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e3\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003eSb\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e5\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003e. Here, we perform a systematic measurement of elastoresistance in two hole-doped CsV\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e3\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003eSb\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e5\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003e series: CsV\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e3\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003eSb\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e5-y\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003eSn\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003ey\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003e (y = 0.04 and 0.06) and CsV\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e3-x\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003eTi\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003ex\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003eSb\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e5\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003e (x = 0.03, 0.05 and 0.09). Below the CDW transition temperature (\u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eT\u003c/strong\u003e\u003c/em\u003e\u003csub\u003e\u003cem\u003e\u003cstrong\u003eCDW\u003c/strong\u003e\u003c/em\u003e\u003c/sub\u003e\u003cstrong\u003e), the elastoresistance coefficient in all samples undergoes a jump-like transition at \u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eT\u003c/strong\u003e\u003c/em\u003e\u003csub\u003e\u003cem\u003e\u003cstrong\u003eCDW\u003c/strong\u003e\u003c/em\u003e\u003c/sub\u003e\u003cstrong\u003e and then another kink-like transition at a lower temperature (\u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eT*\u003c/strong\u003e\u003c/em\u003e\u003cstrong\u003e). Based on a Ginzburg-Landau analysis of CDW order, the jump-like transition at \u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eT\u003c/strong\u003e\u003c/em\u003e\u003csub\u003e\u003cem\u003e\u003cstrong\u003eCDW\u003c/strong\u003e\u003c/em\u003e\u003c/sub\u003e\u003cstrong\u003e is well explained by a triple-\u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eQ\u003c/strong\u003e\u003c/em\u003e\u003cstrong\u003e CDW driven by lattice instability, while the kink-like transition around \u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eT*\u003c/strong\u003e\u003c/em\u003e\u003cstrong\u003e is ascribed to an interaction-driven quantum melting of triple-\u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eQ\u003c/strong\u003e\u003c/em\u003e\u003cstrong\u003e CDW, which leads to a nematic CDW state at low temperatures. Interestingly, the \u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eT*\u003c/strong\u003e\u003c/em\u003e\u003cstrong\u003e in all samples follows a perfect anti-correlation with the superconducting transition temperature (\u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eT\u003c/strong\u003e\u003c/em\u003e\u003csub\u003e\u003cem\u003e\u003cstrong\u003ec\u003c/strong\u003e\u003c/em\u003e\u003c/sub\u003e\u003cstrong\u003e), indicating an intertwinement of superconductivity and nematic CDW. Strikingly, the elastoresistance coefficient of Sn-doped samples exhibits a distinct temperature dependence from that of pristine and Ti-doped samples above \u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eT\u003c/strong\u003e\u003c/em\u003e\u003csub\u003e\u003cem\u003e\u003cstrong\u003eCDW\u003c/strong\u003e\u003c/em\u003e\u003c/sub\u003e\u003cstrong\u003e, which is ascribed to a charge stripe instability enhanced by Sn doping. Our present findings provide a new perspective to understand the intertwined orders in kagome superconductors \u003c/strong\u003e\u003cem\u003e\u003cstrong\u003eA\u003c/strong\u003e\u003c/em\u003e\u003cstrong\u003eV\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e3\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003eSb\u003c/strong\u003e\u003csub\u003e\u003cstrong\u003e5\u003c/strong\u003e\u003c/sub\u003e\u003cstrong\u003e.\u003c/strong\u003e\u003c/p\u003e","manuscriptTitle":"Intertwined charge-density-wave order in vanadium-based kagome superconductors","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-03-08 08:44:59","doi":"10.21203/rs.3.rs-3757459/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"npj-quantum-materials","isNatureJournal":false,"hasQc":false,"allowDirectSubmit":false,"externalIdentity":"npjquantmats","sideBox":"Learn more about [npj Quantum Materials](http://www.nature.com/npjquantmats/)","snPcode":"41535","submissionUrl":"https://mts-npjquantmats.nature.com/cgi-bin/main.plex","title":"npj Quantum Materials","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"ejp","reportingPortfolio":"NPJ","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"03bde1be-f97e-4469-894c-b4d9ce43c648","owner":[],"postedDate":"March 8th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[{"id":28387302,"name":"Physical sciences/Physics/Condensed-matter physics/Superconducting properties and materials"},{"id":28387303,"name":"Physical sciences/Physics/Condensed-matter physics/Electronic properties and materials"}],"tags":[],"updatedAt":"2025-11-08T00:38:06+00:00","versionOfRecord":[],"versionCreatedAt":"2024-03-08 08:44:59","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-3757459","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-3757459","identity":"rs-3757459","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}