Enhancing Critical Current Density in Thin Superconductor Layers by Moiré Pinning Centers

Enhancing Critical Current Density in Thin Superconductor Layers by Moiré Pinning Centers | 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 Article Enhancing Critical Current Density in Thin Superconductor Layers by Moiré Pinning Centers Zahra Owjifard, Ali Tavana, Mehdi Hosseini This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4556765/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract One important factor affecting the critical current density in type-II superconductors is the formation of artificial pinning centers. Hence, the engineering of pinning centers in superconducting systems has garnered considerable attention. In this study, the effect of moiré patterned pinning centers on the critical current density of superconducting tapes is investigated. The Langevin equation is solved by taking into account the prominent forces within the superconductor medium, using the appropriate boundary conditions for vortices. The vortex dynamics is investigated by performing molecular dynamics simulations, which are used to calculate the corresponding critical current densities. Results show a significant enhancement in the critical current density at particular angles of the relative rotation of the primary lattices. It is also revealed that for stronger pinning forces, the calculated critical current densities are higher in the moiré lattices compared to the primary lattices of pinning centers. Physical sciences/Physics/Condensed matter physics Physical sciences/Physics/Condensed matter physics/Superconducting properties and materials Physical sciences/Physics/Condensed matter physics/Surfaces interfaces and thin films Superconducting tapes moiré pattern vortex dynamics Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted 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-4556765","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":318889730,"identity":"ea7b882d-7792-4669-ac36-fdf96b378833","order_by":0,"name":"Zahra Owjifard","email":"","orcid":"","institution":"University of Mohaghegh Ardabili","correspondingAuthor":false,"prefix":"","firstName":"Zahra","middleName":"","lastName":"Owjifard","suffix":""},{"id":318889732,"identity":"0993faa5-1cfc-4535-9774-7a323cd5143f","order_by":1,"name":"Ali Tavana","email":"","orcid":"","institution":"University of Mohaghegh Ardabili","correspondingAuthor":false,"prefix":"","firstName":"Ali","middleName":"","lastName":"Tavana","suffix":""},{"id":318889733,"identity":"9899b079-a0c2-4764-accd-4c6eaae51029","order_by":2,"name":"Mehdi Hosseini","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA3ElEQVRIiWNgGAWjYBACAyjJww/hH0AiCWmRbGBgbCBBC4hxAEkLXmDO3v74w4eCOzLG58+YP/hQc4eBv/0A4+EKPFose86YSc4weMZjdiPHsHHGsWcMEmcSGA6eweewGzlszDwGh4FaeAybeRsOMzDcYGA42IBXS/rjz3+AWoz7zxg2/wVqkSesJcFAmgGoxYAhx7CZEajFgKCWM0C/9AC1SNxIK5zZc+wwj+GZxAb8Wo4DQ+zHn8P2/P2HN3z4UXNYTu744cMf8WnBADwM4PgZBaNgFIyCUUARAACH21V9izAowQAAAABJRU5ErkJggg==","orcid":"","institution":"Shiraz University of Technology","correspondingAuthor":true,"prefix":"","firstName":"Mehdi","middleName":"","lastName":"Hosseini","suffix":""}],"badges":[],"createdAt":"2024-06-10 08:37:43","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4556765/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4556765/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":61756501,"identity":"50c4ecd8-554c-469f-a1c3-2d96814e7a82","added_by":"auto","created_at":"2024-08-05 08:40:34","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":696598,"visible":true,"origin":"","legend":"","description":"","filename":"finalmanuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4556765/v1_covered_6445b8a0-62d9-4d21-867d-659f1c329e99.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Enhancing Critical Current Density in Thin Superconductor Layers by Moiré Pinning Centers","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Superconducting tapes, moiré pattern, vortex dynamics","lastPublishedDoi":"10.21203/rs.3.rs-4556765/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4556765/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eOne important factor affecting the critical current density in type-II superconductors is the formation of artificial pinning centers. 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