Enhancing Spin Coherence in Metallic Single Walled Carbon Nanotubes Utilizing Chiral Perturbations

Enhancing Spin Coherence in Metallic Single Walled Carbon Nanotubes Utilizing Chiral Perturbations | 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 Spin Coherence in Metallic Single Walled Carbon Nanotubes Utilizing Chiral Perturbations Yossi Paltiel, Hanna Fridman, Riley Stephenson, Meital Ozeri, and 6 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8443094/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 Quantum interference governs the transport behavior of low-dimensional conductors, where the phase coherence of scattered electrons gives rise to phenomena such as weak localization (WL) and weak anti-localization (WAL). Understanding how molecular environments influence these effects is crucial for advancing spin-dependent transport at the nanoscale. Here, we investigate the magneto-conductance of metallic single-walled carbon nanotube (m-SWNT) devices under conditions in which chiral molecules and chiral polymers interact with the nanotube surface. Pristine m-SWNTs display a WL-like feature, characterized by a narrow conductance dip around zero magnetic field, which is consistent with coherent backscattering in the absence of strong spin-orbit coupling. Following the adsorption of chiral molecules, the magneto-conductance evolves into a WAL profile, indicating the emergence of spin–orbit coupling (SOC) associated with the chiral overlayer. Moreover, extremely long coherence length is measured for spin transport in the chiral material. Utilizing a polymer that wraps the m-SWNT surface with a fixed helical pitch and in a single-handed fashion yields a stronger WAL response and higher effective SOC. These results demonstrate that molecular chirality can modulate quantum interference and spin–orbit interactions in carbon-based nanostructures, offering new pathways to control spin transport through molecular design. Physical sciences/Nanoscience and technology/Nanoscale materials/Carbon nanotubes and fullerenes Physical sciences/Nanoscience and technology/Nanoscale devices/Quantum information Physical sciences/Physics/Condensed-matter physics/Spintronics Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SIfinal.pdf Supplementary Information 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. 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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-8443094","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":588578886,"identity":"115b74ee-9373-42ba-9ebc-52ba92f8e741","order_by":0,"name":"Yossi 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Understanding how molecular environments influence these effects is crucial for advancing spin-dependent transport at the nanoscale. Here, we investigate the magneto-conductance of metallic single-walled carbon nanotube (m-SWNT) devices under conditions in which chiral molecules and chiral polymers interact with the nanotube surface. Pristine m-SWNTs display a WL-like feature, characterized by a narrow conductance dip around zero magnetic field, which is consistent with coherent backscattering in the absence of strong spin-orbit coupling. Following the adsorption of chiral molecules, the magneto-conductance evolves into a WAL profile, indicating the emergence of spin\u0026ndash;orbit coupling (SOC) associated with the chiral overlayer. Moreover, extremely long coherence length is measured for spin transport in the chiral material. 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