Angle Resolved Magnetic Chirality Control in a Dy3 Single Molecule Toroic

Angle Resolved Magnetic Chirality Control in a Dy3 Single Molecule Toroic | 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 Angle Resolved Magnetic Chirality Control in a Dy3 Single Molecule Toroic Eufemio Moreno-Pineda, Sagar Paul, Zhenhua Zhu, Shuting Liu, Appu Sunil, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9168944/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 Toroidal moments—distinct components in the multipole expansion of electromagnetic fields—possess unique symmetry properties that enable exotic quantum phenomena, magnetoelectric coupling, and non-trivial quantum tunneling, making them attractive for spintronic and memory applications. Single molecule toroics (SMTs), typically incorporating strongly anisotropic Dy3+ ions, exhibit degenerate toroidal ground states of opposite chirality with toroidal moments ±. Although magnetically silent due to zero net magnetization, these states remain theoretically addressable through magnetoelectric coupling, while the relevant excitations involve large spin flips or forbidden transitions. Here, we propose and demonstrate an alternative route to chirality selection in a nearly perfect Dy3 toroidal complex, based on angle resolved quantum tunnelling history. Using μSQUID magnetometry on oriented microcrystals at 30 mK, we observe angular history dependent remanence from uncompensated out of plane components, directly evidencing chirality selection across the crystal. Angle dependent switching maps confirm the toroidal ground state and allow estimation of Dy–Dy interactions. We further identify a persistent chiral bias associated with specific angular histories, maintained over extremely long relaxation times (>106 s), placing this system among the slowest relaxing single molecule magnets. This mechanism could, in principle, operate at the single molecule level, providing a route to initialize magnetic chirality without electric fields, microwaves, or optical excitation, and advancing prospects for chirality based memory. Physical sciences/Physics/Condensed-matter physics/Magnetic properties and materials Physical sciences/Chemistry/Materials chemistry/Magnetic materials Physical sciences/Chemistry/Physical chemistry/Chemical physics Full Text Additional Declarations There is NO Competing Interest. Supplementary Files ChiralitySI.docx Supplementary Material Dy3phClO4.cif Crystallographic data file 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-9168944","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":627043071,"identity":"a443f2f4-c160-484a-bdb8-48a2a5551c1f","order_by":0,"name":"Eufemio 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Single molecule toroics (SMTs), typically incorporating strongly anisotropic Dy3+ ions, exhibit degenerate toroidal ground states of opposite chirality with toroidal moments ±. Although magnetically silent due to zero net magnetization, these states remain theoretically addressable through magnetoelectric coupling, while the relevant excitations involve large spin flips or forbidden transitions. Here, we propose and demonstrate an alternative route to chirality selection in a nearly perfect Dy3 toroidal complex, based on angle resolved quantum tunnelling history. Using μSQUID magnetometry on oriented microcrystals at 30 mK, we observe angular history dependent remanence from uncompensated out of plane components, directly evidencing chirality selection across the crystal. Angle dependent switching maps confirm the toroidal ground state and allow estimation of Dy–Dy interactions. We further identify a persistent chiral bias associated with specific angular histories, maintained over extremely long relaxation times (\u003e106 s), placing this system among the slowest relaxing single molecule magnets. This mechanism could, in principle, operate at the single molecule level, providing a route to initialize magnetic chirality without electric fields, microwaves, or optical excitation, and advancing prospects for chirality based memory.","manuscriptTitle":"Angle Resolved Magnetic Chirality Control in a Dy3 Single Molecule Toroic","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-04-22 03:02:08","doi":"10.21203/rs.3.rs-9168944/v1","editorialEvents":[],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"nature-communications","isNatureJournal":true,"hasQc":false,"allowDirectSubmit":false,"externalIdentity":"NCOMMS","sideBox":"Learn more about [Nature Communications](http://www.nature.com/ncomms/)","snPcode":"","submissionUrl":"https://mts-ncomms.nature.com/","title":"Nature Communications","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"ejp","reportingPortfolio":"Nature Communications","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"1802ca5a-a87e-42ee-a7c0-a2081c3f109d","owner":[],"postedDate":"April 22nd, 2026","published":true,"recentEditorialEvents":[{"type":"editorInvitedReview","content":"This content is not available.","date":"2026-05-07T09:34:52+00:00","index":1,"fulltext":"This content is not available."},{"type":"editorInvitedReview","content":"This content is not available.","date":"2026-05-06T04:51:32+00:00","index":2,"fulltext":"This content is not available."}],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[{"id":66735724,"name":"Physical sciences/Physics/Condensed-matter physics/Magnetic properties and materials"},{"id":66735725,"name":"Physical sciences/Chemistry/Materials chemistry/Magnetic materials"},{"id":66735726,"name":"Physical sciences/Chemistry/Physical chemistry/Chemical physics"}],"tags":[],"updatedAt":"2026-04-22T03:02:09+00:00","versionOfRecord":[],"versionCreatedAt":"2026-04-22 03:02:08","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-9168944","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-9168944","identity":"rs-9168944","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}