Excitonic gap, phase transition, and quantum Hall effect in graphene: strong-coupling regime

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dc.creatorGusynin, V. P.
dc.creatorMiransky, V. A.
dc.creatorSharapov, S. G.
dc.creatorShovkovy, I. A.
dc.date2006-12-19
dc.date.accessioned2026-07-07T07:35:53Z
dc.date.available2026-07-07T07:35:53Z
dc.descriptionWe suggest that physics underlying the recently observed removal of sublattice and spin degeneracies in graphene in a strong magnetic field describes a phase transition connected with the generation of excitonic and spin gaps. The strong-coupling regime is described using a phenomenological model with enhanced Zeeman splitting (spin gap) and excitonic gaps. The experimental form of the Hall conductivity $σ_{xy}$ with the additional $ν= 0, \pm 1$ plateaus is reproduced. The form of $σ_{xy}$ in the case of a strong-coupling regime with no enhanced Zeeman splitting is also discussed.
dc.descriptionRevtex4, 10 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0612488
dc.identifierhttp://arxiv.org/abs/cond-mat/0612488
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/120247
dc.subjectStrongly Correlated Electrons
dc.subjectMesoscale and Nanoscale Physics
dc.titleExcitonic gap, phase transition, and quantum Hall effect in graphene: strong-coupling regime
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