Hidden multiferroic order in graphene zigzag ribbons

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dc.creatorFernández-Rossier, J.
dc.date2007-10-18
dc.date.accessioned2026-07-07T09:24:28Z
dc.date.available2026-07-07T09:24:28Z
dc.descriptionThe insulating magnetic phase in graphene zigzag ribbons, predicted both by density functional and mean field Hubbard model calculations, is described without additional approximations with a BCS wave function of two phase-locked condensates of spin-polarized electron-hole pairs. The associated order parameter is the spin dipole operator that features both magnetic and electric order and accounts for the spin-resolved ferroelectricity of the system. Each condensate is associated to a spin-dependent dipole and their relative phase locking sets the total electric dipole and total magnetization equal to zero.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0710.3484
dc.identifierhttp://arxiv.org/abs/0710.3484
dc.identifierPhys. Rev. B 77, 075430 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.075430
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/156108
dc.subjectStrongly Correlated Electrons
dc.subjectMesoscale and Nanoscale Physics
dc.titleHidden multiferroic order in graphene zigzag ribbons
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