First order ferromagnetic phase transition in the low electronic density regime of a biased graphene bilayer

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dc.creatorStauber, T.
dc.creatorCastro, Eduardo V.
dc.creatorSilva, N. A. P.
dc.creatorPeres, N. M. R.
dc.date2008-07-23
dc.date.accessioned2026-07-07T09:52:21Z
dc.date.available2026-07-07T09:52:21Z
dc.descriptionThe phase diagram of a biased graphene bilayer is computed and the existence of a ferromagnetic phase is discussed both in the critical on-site interaction $U_{c}$ versus doping density and versus temperature. We show that in the ferromagnetic phase the two planes have unequal magnetization and that the electronic density is hole like in one plane and electron like in the other. We give evidence for a \emph{first-order} phase transition between paramagnetic and ferromagnetic phases induced by doping at zero temperature.
dc.description19 pages, 7 figures; detailed presentation of the calculations done in Phys. Rev. Lett. 100, 186803 (2008)
dc.identifierhttps://arxiv.org/abs/0807.3623
dc.identifierhttp://arxiv.org/abs/0807.3623
dc.identifierJ. Phys. : Condens. Matter 20, 335207 (2008)
dc.identifierdoi:10.1088/0953-8984/20/33/335207
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/165564
dc.subjectStrongly Correlated Electrons
dc.subjectMesoscale and Nanoscale Physics
dc.titleFirst order ferromagnetic phase transition in the low electronic density regime of a biased graphene bilayer
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