Electrically writing a magnetic heliknoton in a chiral magnet

Electrically writing a magnetic heliknoton in a chiral magnet | 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 Electrically writing a magnetic heliknoton in a chiral magnet Haifeng Du, Long Li, Dongsheng Song, Weiwei Wang, Lingyao Kong, and 6 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6251266/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 07 Jan, 2026 Read the published version in Nature Materials → Version 1 posted You are reading this latest preprint version Abstract Magnetic heliknoton, three-dimensional counterpart to the two-dimensional magnetic skyrmion, serves as a pivotal topological soliton for extending topological magnetism into three dimensions. However, its experimental realization remains elusive. Here, we report the controlled nucleation of a magnetic heliknoton in chiral magnet FeGe at zero magnetic field, achieved through nanoscale current-pulse excitation. By combining angle-dependent quantitative electron holography with micromagnetic simulations, we resolve the 3D spin texture of the heliknoton. Notably, the heliknoton exhibits current-driven collinear motion without Hall effect. Our findings establish a readily accessible experimental platform for further exploration of three-dimensional topological solitons and highlight their potential for practical applications. Physical sciences/Materials science/Condensed-matter physics/Magnetic properties and materials Physical sciences/Physics/Condensed-matter physics/Topological matter/Topological defects Physical sciences/Physics/Condensed-matter physics/Spintronics Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryVideo4.mp4 Supplementary Video 4 SupplementaryVideo7.mp4 Supplementary Video 7 SupplementaryVideo10.mp4 Supplementary Video 10 SupplementaryVideo8.mp4 Supplementary Video 8 SupplementaryVideo1.mp4 Supplementary Video 1 SupplementaryVideo5.mp4 Supplementary Video 5 SupplementaryVideo11.mp4 Supplementary Video 11 SupplementaryVideo2.mp4 Supplementary Video 2 SupplementaryVideo3.mp4 Supplementary Video 3 SupplementaryInformationr2.docx Supplementary Information SupplementaryVideo9.mp4 Supplementary Video 9 SupplementaryVideo6.mp4 Supplementary Video 6 Cite Share Download PDF Status: Published Journal Publication published 07 Jan, 2026 Read the published version in Nature Materials → 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-6251266","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":512972028,"identity":"dc7c7bdf-20af-4735-9ca7-f76051c1a7ce","order_by":0,"name":"Haifeng 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However, its experimental realization remains elusive. Here, we report the controlled nucleation of a magnetic heliknoton in chiral magnet FeGe at zero magnetic field, achieved through nanoscale current-pulse excitation. By combining angle-dependent quantitative electron holography with micromagnetic simulations, we resolve the 3D spin texture of the heliknoton. Notably, the heliknoton exhibits current-driven collinear motion without Hall effect. 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