2p interlayer exciton revealed by hybridization in bilayer MoS2

2p interlayer exciton revealed by hybridization in bilayer MoS2 | 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 2 p interlayer exciton revealed by hybridization in bilayer MoS 2 Chun Hung (Joshua) Lui, Soonyoung Cha, Zhaoran Xu, Tianyi Ouyang, and 7 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6734783/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 Interlayer excitons—bound electron–hole pairs residing in separate layers—feature long lifetimes and Stark-tunable energies, making them promising for excitonic devices and dipolar quantum phenomena. While most prior studies have focused on the 1 s ground state, here we reveal the 2 p interlayer exciton along with a Rydberg series of interlayer states extending from 1 s to 4 s in bilayer MoS 2 . The 2 p state, optically dark at zero field, acquires oscillator strength under an applied electric field through hybridization with the intralayer A exciton. Due to its finite angular momentum, it exhibits distinct selection rules and g -factors in agreement with theoretical expectations. Strikingly, whereas the intralayer Rydberg series fades beyond the 2 s state, the interlayer series remains optically visible up to 4 s . This extended visibility arises from hybridization with the intralayer B exciton, which transfers oscillator strength to higher interlayer states and effectively brightens the entire series. Simulations further uncover a novel coupling mechanism between s -like intralayer and p -like interlayer excitons—one driven not by conventional electron–hole Coulomb interactions, but by interlayer conduction band mixing. These findings establish bilayer MoS 2 as a versatile platform for exploring tunable excitonic phenomena. Physical sciences/Materials science/Condensed-matter physics/Semiconductors/Two-dimensional materials Physical sciences/Materials science/Nanoscale materials/Two-dimensional materials Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SI.docx Supplementary Information 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. 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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-6734783","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":462471943,"identity":"6c589822-93bd-48c4-bc9e-c5f76aa1c8ca","order_by":0,"name":"Chun Hung (Joshua) 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MoS\u003csub\u003e2\u003c/sub\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"nature-portfolio","isNatureJournal":true,"hasQc":false,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"","title":"Nature Portfolio","twitterHandle":"","acdcEnabled":false,"dfaEnabled":false,"editorialSystem":"ejp","reportingPortfolio":"","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-6734783/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6734783/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"Interlayer excitons—bound electron–hole pairs residing in separate layers—feature long lifetimes and Stark-tunable energies, making them promising for excitonic devices and dipolar quantum phenomena. While most prior studies have focused on the 1\u003ci\u003es\u003c/i\u003e ground state, here we reveal the 2\u003ci\u003ep\u003c/i\u003e interlayer exciton along with a Rydberg series of interlayer states extending from 1\u003ci\u003es\u003c/i\u003e to 4\u003ci\u003es\u003c/i\u003e in bilayer MoS\u003csub\u003e2\u003c/sub\u003e. The 2\u003ci\u003ep\u003c/i\u003e state, optically dark at zero field, acquires oscillator strength under an applied electric field through hybridization with the intralayer A exciton. Due to its finite angular momentum, it exhibits distinct selection rules and \u003ci\u003eg\u003c/i\u003e-factors in agreement with theoretical expectations. Strikingly, whereas the intralayer Rydberg series fades beyond the 2\u003ci\u003es\u003c/i\u003e state, the interlayer series remains optically visible up to 4\u003ci\u003es\u003c/i\u003e. This extended visibility arises from hybridization with the intralayer B exciton, which transfers oscillator strength to higher interlayer states and effectively brightens the entire series. Simulations further uncover a novel coupling mechanism between \u003ci\u003es\u003c/i\u003e-like intralayer and \u003ci\u003ep\u003c/i\u003e-like interlayer excitons—one driven not by conventional electron–hole Coulomb interactions, but by interlayer conduction band mixing. These findings establish bilayer MoS\u003csub\u003e2\u003c/sub\u003e as a versatile platform for exploring tunable excitonic phenomena.","manuscriptTitle":"2p interlayer exciton revealed by hybridization in bilayer MoS2","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-06-20 17:14:35","doi":"10.21203/rs.3.rs-6734783/v1","editorialEvents":[],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"nature-physics","isNatureJournal":true,"hasQc":false,"allowDirectSubmit":false,"externalIdentity":"nphys","sideBox":"Learn more about [Nature Physics](http://www.nature.com/nphys/)","snPcode":"","submissionUrl":"","title":"Nature Physics","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"ejp","reportingPortfolio":"Nature Research","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"76e3a28f-b488-4fc1-a651-de911f31ba3d","owner":[],"postedDate":"June 20th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[{"id":49104933,"name":"Physical sciences/Materials science/Condensed-matter physics/Semiconductors/Two-dimensional materials"},{"id":49104934,"name":"Physical sciences/Materials science/Nanoscale materials/Two-dimensional materials"}],"tags":[],"updatedAt":"2026-04-27T12:21:26+00:00","versionOfRecord":[],"versionCreatedAt":"2025-06-20 17:14:35","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-6734783","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-6734783","identity":"rs-6734783","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}