Valley Photonic Molecular Crystals

Valley Photonic Molecular Crystals | 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 Valley Photonic Molecular Crystals Zhe Li, Yiheng Fan, Ziming Chen, Deyang Kong, Kaiyu Cui, Yongzhuo Li, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9421121/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 5 You are reading this latest preprint version Abstract Organic topological insulators based on molecular crystals have attracted increasing attention for its novel topological phase and application potential for spintronics, valleytronics and flexible electronics. Unlike inorganic crystals, molecules in molecular crystals possess rotational degrees of freedom, which significantly influence the absorption, photonic and mechanical properties of molecular crystals. However, it is still a challenge to investigate the topological property after considering the molecular rotation, as rotation can disrupt the periodicity of the molecular crystal, rendering the traditional energy band theory inapplicable. Consequently, molecular rotation is often neglected in previous works. It is essential to address such impact, since it could enable the dynamic evolution of topological states and establish molecular rotation as a new degree of freedom for topological manipulation. In this work, we have employed the valley photonic crystal to theoretically and experimentally investigate the valley topological properties of molecular crystals under various rotational disorders, named as Valley Photonic Molecular Crystals (VPMC). We demonstrated that the topological properties of VPMC are preserved even under strong rotational disorder, highlighting their inherent robustness. The VPMC provides an excellent platform for emulating and investigating the topological properties of molecular crystals as it is feasible to fabricate and manipulate the rotation. Moreover, this work also opens up possibilities for device applications based on rotational disorder. Topological insulators Photonic crystals Molecular crystals Disorder systems Full Text Additional Declarations No competing interests reported. Supplementary Files SupplementalMaterial.docx Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 12 May, 2026 Reviewers invited by journal 06 May, 2026 Editor assigned by journal 17 Apr, 2026 Submission checks completed at journal 17 Apr, 2026 First submitted to journal 14 Apr, 2026 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-9421121","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":639207132,"identity":"8c464a75-0727-4b48-92f3-91bb535314f9","order_by":0,"name":"Zhe Li","email":"","orcid":"","institution":"Tsinghua University","correspondingAuthor":false,"prefix":"","firstName":"Zhe","middleName":"","lastName":"Li","suffix":""},{"id":639207133,"identity":"6f69a6e8-1bce-4c8c-bc6b-332299d2a898","order_by":1,"name":"Yiheng Fan","email":"","orcid":"","institution":"Tsinghua 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Unlike inorganic crystals, molecules in molecular crystals possess rotational degrees of freedom, which significantly influence the absorption, photonic and mechanical properties of molecular crystals. However, it is still a challenge to investigate the topological property after considering the molecular rotation, as rotation can disrupt the periodicity of the molecular crystal, rendering the traditional energy band theory inapplicable. Consequently, molecular rotation is often neglected in previous works. It is essential to address such impact, since it could enable the dynamic evolution of topological states and establish molecular rotation as a new degree of freedom for topological manipulation. In this work, we have employed the valley photonic crystal to theoretically and experimentally investigate the valley topological properties of molecular crystals under various rotational disorders, named as Valley Photonic Molecular Crystals (VPMC). We demonstrated that the topological properties of VPMC are preserved even under strong rotational disorder, highlighting their inherent robustness. The VPMC provides an excellent platform for emulating and investigating the topological properties of molecular crystals as it is feasible to fabricate and manipulate the rotation. Moreover, this work also opens up possibilities for device applications based on rotational disorder.\u003c/p\u003e","manuscriptTitle":"Valley Photonic Molecular Crystals","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-05-15 13:27:54","doi":"10.21203/rs.3.rs-9421121/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"85784120130264194984986467595240523825","date":"2026-05-12T17:20:56+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-05-06T12:09:58+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2026-04-17T14:36:13+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2026-04-17T12:41:30+00:00","index":"","fulltext":""},{"type":"submitted","content":"PhotoniX Synergy","date":"2026-04-15T03:16:19+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"photonix-synergy","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"Learn more about [PhotoniX Synergy](https://link.springer.com/journal/44519)","snPcode":"44519","submissionUrl":"https://submission.springernature.com/new-submission/44519/3","title":"PhotoniX Synergy","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Springer Open","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"dcf9aa11-e63d-4d8b-b269-9a65f4f03584","owner":[],"postedDate":"May 15th, 2026","published":true,"recentEditorialEvents":[{"type":"reviewerAgreed","content":"85784120130264194984986467595240523825","date":"2026-05-12T17:20:56+00:00","index":25,"fulltext":""},{"type":"reviewersInvited","content":"11","date":"2026-05-06T12:09:58+00:00","index":"","fulltext":""}],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2026-05-15T13:27:54+00:00","versionOfRecord":[],"versionCreatedAt":"2026-05-15 13:27:54","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-9421121","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-9421121","identity":"rs-9421121","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}