Importance of on-site interaction in graphene

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dc.creatorDahal, Hari P.
dc.creatorJulien, Jean-Pierre
dc.creatorBalatsky, A. V.
dc.date2007-12-17
dc.date.accessioned2026-07-07T08:49:48Z
dc.date.available2026-07-07T08:49:48Z
dc.descriptionWe use the Gutzwiller method to investigate the importance of the on-site Coulomb interaction in graphene. We apply it to Hubbard Hamiltonian to study the renormalization of the kinetic energy in graphene due to the on-site Coulomb interaction. We find that a reasonable strength of the interaction has a very weak effect in reducing the kinetic energy. Hence we predict that the Brinkmann-Rice metal-insulator transition in graphene is not possible. The effect is understood in terms of the high kinetic energy in graphene.
dc.identifierhttps://arxiv.org/abs/0712.2836
dc.identifierhttp://arxiv.org/abs/0712.2836
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/144436
dc.subjectStrongly Correlated Electrons
dc.titleImportance of on-site interaction in graphene
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