Departure from the conical dispersion in epitaxial graphene

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dc.creatorZhou, S. Y.
dc.creatorSiegel, D. A.
dc.creatorFedorov, A. V.
dc.creatorLanzara, A.
dc.date2008-01-25
dc.date2008-07-30
dc.date.accessioned2026-07-07T09:53:23Z
dc.date.available2026-07-07T09:53:23Z
dc.descriptionThe pi bands of epitaxially grown graphene are studied by using high resolution angle resolved photoemission spectroscopy. Clear deviations from the conical dispersion expected for massless Dirac fermions and an anomalous increase of the scattering rate are observed in the vicinity of the Dirac point energy. Possible explanations for such anomalies are discussed in terms of many-body interactions and the opening of a gap. We present detailed experimental evidences in support of the gap scenario. This finding reveals a fundamental intrinsic property of epitaxial graphene and demonstrates the possibility of engineering the band gap in epitaxial graphene.
dc.description5 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0801.3862
dc.identifierhttp://arxiv.org/abs/0801.3862
dc.identifierPhysica E 40, 2642-2647 (2008)
dc.identifierdoi:10.1016/j.physe.2007.10.121
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/165936
dc.subjectMaterials Science
dc.subjectStrongly Correlated Electrons
dc.titleDeparture from the conical dispersion in epitaxial graphene
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