Competition between spin and charge polarized states in nanographene ribbons with zigzag edges

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dc.creatorYamashiro, Atsushi
dc.creatorShimoi, Yukihiro
dc.creatorHarigaya, Kikuo
dc.creatorWakabayashi, Katsunori
dc.date2003-09-26
dc.date.accessioned2026-07-07T02:53:47Z
dc.date.available2026-07-07T02:53:47Z
dc.descriptionEffects of the nearest neighbor Coulomb interaction on nanographene ribbons with zigzag edges are investigated using the extended Hubbard model within the unrestricted Hartree-Fock approximation. The nearest Coulomb interaction stabilizes a novel electronic state with the opposite electric charges separated and localized along both edges, resulting in a finite electric dipole moment pointing from one edge to the other. This charge-polarized state competes with the peculiar spin-polarized state caused by the on-site Coulomb interaction and is stabilized by an external electric field.
dc.description4 pages; 4 figures; accepted for publication in Phys. Rev. B; related Web site: http://staff.aist.go.jp/k.harigaya/index_E.html
dc.identifierhttps://arxiv.org/abs/cond-mat/0309600
dc.identifierhttp://arxiv.org/abs/cond-mat/0309600
dc.identifierPhys. Rev. B vol. 68, 193410 (2003)
dc.identifierdoi:10.1103/PhysRevB.68.193410
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22297
dc.subjectStrongly Correlated Electrons
dc.subjectSoft Condensed Matter
dc.subjectChemical Physics
dc.subjectQuantum Physics
dc.titleCompetition between spin and charge polarized states in nanographene ribbons with zigzag edges
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