{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T06:36:29Z","timestamp":1777617389180,"version":"3.51.4"},"reference-count":43,"publisher":"IOP Publishing","issue":"2","license":[{"start":{"date-parts":[[2024,1,25]],"date-time":"2024-01-25T00:00:00Z","timestamp":1706140800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,1,25]],"date-time":"2024-01-25T00:00:00Z","timestamp":1706140800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"crossref","award":["Te386\/22-1"],"award-info":[{"award-number":["Te386\/22-1"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["2D Mater."],"published-print":{"date-parts":[[2024,4,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Graphene plasmons, including those in intercalated graphene, are an important research focus, with the promise of enabling light manipulation and providing a unique platform for gaining fundamental insights into many-body electronic interactions. In the present work, we discuss the results of low-energy plasmonic excitations in epitaxial quasi-free monolayer graphene formed by intercalation of Sn beneath the buffer layer (BL) on 4\u2009H-SiC(0001). The quantitative analysis of the sheet plasmon dispersion revealed that the Sn-induced (<jats:inline-formula>\n                     <jats:tex-math\/>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mn>1<\/mml:mn>\n                        <mml:mo>\u00d7<\/mml:mo>\n                        <mml:mn>1<\/mml:mn>\n                     <\/mml:math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"tdmad1a70ieqn1.gif\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula>) interface is metallic and results in formation of charge-neutral graphene. A redshift of the 2D plasmon was found, but only after doping with potassium. The Sn-diluted interface, revealing a (<jats:inline-formula>\n                     <jats:tex-math\/>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:msqrt>\n                           <mml:mn>3<\/mml:mn>\n                        <\/mml:msqrt>\n                        <mml:mo>\u00d7<\/mml:mo>\n                        <mml:msqrt>\n                           <mml:mn>3<\/mml:mn>\n                        <\/mml:msqrt>\n                     <\/mml:math>\n                     <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"tdmad1a70ieqn2.gif\" xlink:type=\"simple\"\/>\n                  <\/jats:inline-formula>) reconstruction and resulting in intrinsically <jats:italic>n<\/jats:italic>-type doped graphene, behaves comparably to the BL for epitaxial monolayer graphene (MLG). Furthermore, it seems that a dipolar coupling of the longitudinal charge density fluctuations in graphene to the interface layer triggers the formation and the loss energy of a plasmonic multipole component, which therefore makes it suitable for studying proximity effects of excitations in electronically weakly coupled 2D heterosystems.<\/jats:p>","DOI":"10.1088\/2053-1583\/ad1a70","type":"journal-article","created":{"date-parts":[[2024,1,3]],"date-time":"2024-01-03T22:53:51Z","timestamp":1704322431000},"page":"025013","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":12,"title":["Exploring graphene-substrate interactions: plasmonic excitation in Sn-intercalated epitaxial graphene"],"prefix":"10.1088","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1971-2860","authenticated-orcid":true,"given":"Zamin","family":"Mamiyev","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0453-0765","authenticated-orcid":true,"given":"Christoph","family":"Tegenkamp","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"266","published-online":{"date-parts":[[2024,1,25]]},"reference":[{"key":"tdmad1a70bib1","doi-asserted-by":"publisher","first-page":"183","DOI":"10.1038\/nmat2006","volume":"6","author":"Novoselov","year":"2007","journal-title":"Nat. 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