Electronic properties of curved few-layers graphene : a geometrical approach.

dc.contributor.authorCariglia, Marco
dc.contributor.authorGiambò, Roberto
dc.contributor.authorPerali, Andrea
dc.date.accessioned2018-10-29T15:05:05Z
dc.date.available2018-10-29T15:05:05Z
dc.date.issued2018
dc.description.abstractWe show the presence of non-relativistic Lévy-Leblond fermions in flat three- and four-layers graphene with AB stacking, extending the results obtained in Cariglia et al. 2017 for bilayer graphene. When the layer is curved we obtain a set of equations for Galilean fermions that are a variation of those of Lévy-Leblond with a well defined combination of pseudospin, and that admit Lévy-Leblond spinors as solutions in an approriate limit. The local energy of such Galilean fermions is sensitive to the intrinsic curvature of the surface. We discuss the relationship between two-dimensional pseudospin, labelling layer degrees of freedom, and the different energy bands. For Lévy-Leblond fermions, an interpretation is given in terms of massless fermions in an effective 4D spacetime, and in this case the pseudospin is related to four dimensional chirality. A non-zero energy band gap between conduction and valence electronic bands is obtained for surfaces with positive curvature.pt_BR
dc.identifier.citationCARIGLIA, M.; GIAMBÒ, R.; PERALI, A.Electronic properties of curved few-layers graphene : a geometrical approach. Condensed Matter, v. 3, n. 2, p. 1-18, abr. 2018. Disponível em: <http://www.mdpi.com/2410-3896/3/2/11>. Acesso em: 16 jun. 2018.pt_BR
dc.identifier.issn24103896
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/10471
dc.language.isoen_USpt_BR
dc.rightsabertopt_BR
dc.rights.licenseThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are credited. Fonte: o próprio artigo.pt_BR
dc.subjectLévy-Leblond equationspt_BR
dc.subjectNon-relativistic fermionspt_BR
dc.subjectEisenhart liftpt_BR
dc.subjectCurved systemspt_BR
dc.titleElectronic properties of curved few-layers graphene : a geometrical approach.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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