Graphene with geometrically induced vorticity

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dc.creatorPachos, Jiannis K.
dc.creatorStone, Michael
dc.creatorTemme, Kristan
dc.date2007-10-03
dc.date2008-03-26
dc.date.accessioned2026-07-07T09:33:03Z
dc.date.available2026-07-07T09:33:03Z
dc.descriptionAt half filling, the electronic structure of graphene can be modelled by a pair of free two-dimensional Dirac fermions. We explicitly demonstrate that in the presence of a geometrically induced gauge field, an everywhere-real Kekule modulation of the hopping matrix elements can correspond to a non-real Higgs field with non-trivial vorticity. This provides a natural setting for fractionally charged vortices with localized zero modes. For fullerene-like molecules we employ the index theorem to demonstrate the existence of six low-lying states that do not depend strongly on the Kekule-induced mass gap.
dc.description4 pages, 3 figures, to appear in PRL
dc.identifierhttps://arxiv.org/abs/0710.0858
dc.identifierhttp://arxiv.org/abs/0710.0858
dc.identifierPhys. Rev. Lett. 100, 156806 (2008)
dc.identifierdoi:10.1103/PhysRevLett.100.156806
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158999
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.subjectQuantum Physics
dc.titleGraphene with geometrically induced vorticity
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