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Many-body interactions in quasi-freestanding graphene

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dc.contributor.authorSiegel, David A.-
dc.contributor.authorPark, Cheol-Hwan-
dc.contributor.authorHwang, Choongyu-
dc.contributor.authorDeslippe, Jack-
dc.contributor.authorFedorov, Alexei V.-
dc.contributor.authorLouie, Steven G.-
dc.contributor.authorLanzara, Alessandra-
dc.date.accessioned2024-05-16T01:17:23Z-
dc.date.available2024-05-16T01:17:23Z-
dc.date.created2023-05-10-
dc.date.created2023-05-10-
dc.date.issued2011-07-
dc.identifier.citationProceedings of the National Academy of Sciences of the United States of America, Vol.108 No.28, pp.11365-11369-
dc.identifier.issn0027-8424-
dc.identifier.urihttps://hdl.handle.net/10371/202349-
dc.description.abstractThe Landau-Fermi liquid picture for quasiparticles assumes that charge carriers are dressed by many-body interactions, forming one of the fundamental theories of solids. Whether this picture still holds for a semimetal such as graphene at the neutrality point, i.e., when the chemical potential coincides with the Dirac point energy, is one of the long-standing puzzles in this field. Here we present such a study in quasi-freestanding graphene by using high-resolution angle-resolved photoemission spectroscopy. We see the electron-electron and electron-phonon interactions go through substantial changes when the semimetallic regime is approached, including renormalizations due to strong electron-electron interactions with similarities to marginal Fermi liquid behavior. These findings set a new benchmark in our understanding of many-body physics in graphene and a variety of novel materials with Dirac fermions. band structure dielectric screening fine structure constant density functional theory self-energy.-
dc.language영어-
dc.publisherNational Academy of Sciences-
dc.titleMany-body interactions in quasi-freestanding graphene-
dc.typeArticle-
dc.identifier.doi10.1073/pnas.1100242108-
dc.citation.journaltitleProceedings of the National Academy of Sciences of the United States of America-
dc.identifier.wosid000292635200021-
dc.identifier.scopusid2-s2.0-79960976032-
dc.citation.endpage11369-
dc.citation.number28-
dc.citation.startpage11365-
dc.citation.volume108-
dc.description.isOpenAccessY-
dc.contributor.affiliatedAuthorPark, Cheol-Hwan-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.subject.keywordAuthorband structure-
dc.subject.keywordAuthordielectric screening-
dc.subject.keywordAuthorfine structure constant-
dc.subject.keywordAuthordensity functional theory-
dc.subject.keywordAuthorself-energy-
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  • College of Natural Sciences
  • Department of Physics and Astronomy
Research Area Condensed Matter Physics, Nanoscale Photonics, Nanoscale Physics, 나노 물리와 나노 광자학, 응집 물질 물리

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