Nonreciprocal Photonic Spin Hall Effect in a Bulk Dirac Semimetal based Tribonacci Photonic Crystal

Nonreciprocal Photonic Spin Hall Effect in a Bulk Dirac Semimetal based Tribonacci Photonic Crystal | 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 Research Article Nonreciprocal Photonic Spin Hall Effect in a Bulk Dirac Semimetal based Tribonacci Photonic Crystal Zhi Ji, Ning-Yi Wang, Wen-Tao Liu, Zhi-Wei Liu, Qi Song, Hua-Peng Ye, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6706697/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 02 Mar, 2026 Read the published version in Applied Physics B → Version 1 posted 7 You are reading this latest preprint version Abstract Nonreciprocal photonic spin Hall effect manifests it as the different spin dependent reflected/transmitted transverse splittings of linearly polarized incident waves at two opposite wave propagation directions. However, its realization remains obscure. Here, we report the discovery of the prominent nonreciprocal photonic spin Hall effect in a bulk Dirac semimetal based on quasiperiodic Tribonacci photonic crystal, which is evidenced by the significantly large reflected spin shift along one propagation direction but the trivial spin shift along the opposite propagation direction due to its asymmetrical geometrical structure and electromagnetic field distribution. In addition, the Fermi energy of the bulk Dirac semimetal can be continuously modified by the external stimulus, which enables the effective control of the nonreciprocal photonic spin Hall effect in the Dirac semimetal based Tribonacci photonic crystal. Our results open up the alternative platform to generate the controllably nonreciprocal photonic spin Hall effect in the quasiperiodic systems via the combination of the bulk Dirac semimetals and Tribonacci photonic crystal. PACS: 78.67.-n, 73.20.Mf, 73.43.-f photonic spin Hall effect nonreciprocal optical property bulk Dirac semimetal quasiperiodic structure Tribonacci photonic crystal Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 02 Mar, 2026 Read the published version in Applied Physics B → Version 1 posted Editorial decision: Revision requested 10 Sep, 2025 Reviews received at journal 25 Jun, 2025 Reviewers agreed at journal 12 Jun, 2025 Reviewers invited by journal 10 Jun, 2025 Editor assigned by journal 26 May, 2025 Submission checks completed at journal 20 May, 2025 First submitted to journal 20 May, 2025 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. 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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-6706697","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":469161743,"identity":"47d6295e-c9d6-4ec4-baaf-663bf95b3a3c","order_by":0,"name":"Zhi Ji","email":"","orcid":"","institution":"Nanjing University of Posts and Telecommunications","correspondingAuthor":false,"prefix":"","firstName":"Zhi","middleName":"","lastName":"Ji","suffix":""},{"id":469161744,"identity":"fb90bf63-b821-4cc9-8c84-8cd92beb59d7","order_by":1,"name":"Ning-Yi Wang","email":"","orcid":"","institution":"Nanjing University of Posts and 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However, its realization remains obscure. Here, we report the discovery of the prominent nonreciprocal photonic spin Hall effect in a bulk Dirac semimetal based on quasiperiodic Tribonacci photonic crystal, which is evidenced by the significantly large reflected spin shift along one propagation direction but the trivial spin shift along the opposite propagation direction due to its asymmetrical geometrical structure and electromagnetic field distribution. In addition, the Fermi energy of the bulk Dirac semimetal can be continuously modified by the external stimulus, which enables the effective control of the nonreciprocal photonic spin Hall effect in the Dirac semimetal based Tribonacci photonic crystal. 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