Observation and Manipulation of Chiral Phasons in a Magnetic System

Observation and Manipulation of Chiral Phasons in a Magnetic System | 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 Observation and Manipulation of Chiral Phasons in a Magnetic System Shilei Zhang, Yang Wu, Zhang Chenhao, Jingyi Chen, Haonan Jin, and 5 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7058774/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 Phasons, quasiparticle excitations corresponding to phase shifts in incommensurate orders, represent the lowest-energy Goldstone modes of such systems, yet have remained unobserved in magnetic materials. Here, we activate the Goldstone mode of a one-dimensional chiral spin helix in a helimagnet by exploiting nonlinear spin dynamics, revealing an Archimedean screw-like phason mode at megahertz frequencies. This unique phase-sliding behavior is directly evidenced through a Doppler-shift signature detected via stroboscopic magneto-optical Kerr effect measurements. Remarkably, owing to the intrinsic screw symmetry of the system, forward- and backward-propagating phasons can be selectively excited, demonstrating well-defined mode chirality. Our results unveil a novel pumping mechanism in magnetic materials and establish a tunable experimental platform for the study of Floquet magnetism. Physical sciences/Physics/Condensed-matter physics/Magnetic properties and materials Physical sciences/Materials science/Condensed-matter physics/Spintronics Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SMchiralphasonsv5.pdf Supplementary Information SM1backward.avi Supplementary Movie 1 SM2forward.avi Supplementary Movie 2 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-7058774","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":492560072,"identity":"25b7b72a-9e68-42b3-a140-f4bef3a33e02","order_by":0,"name":"Shilei 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