Modulation effects on Landau levels in a monolayer graphene

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dc.creatorHo, J. H.
dc.creatorLai, Y. H.
dc.creatorChiu, Y. H.
dc.creatorLin, M. F.
dc.date2007-08-01
dc.date.accessioned2026-07-07T08:21:45Z
dc.date.available2026-07-07T08:21:45Z
dc.descriptionA monolayer graphene exists in an environment where a uniform magnetic field interacts a spatially modulated magnetic field. The spatially modulated magnetic field could affect Landau levels due to a uniform magnetic field. The modulation effects on Landau levels are investigated through the Peierl's tight-binding model. The magneto-electronic properties are dominated by the period, the strength, and the direction of a spatially modulated magnetic field. Such a field could induce the growth in dimensionality, the change of energy dispersions, the destroy of state degeneracy, and the creation of band-edge states. There are a robust Landau level at Fermi level and 1D parabolic subbands located around the original Landau levels, which make density of states exhibit a delta-function-like structure and many pairs of asymmetric peak structure, respectively. The density of states and the energies of band-edge states strongly depend on the strength, but not on the period and the direction.
dc.description11 pages,4 figures
dc.identifierhttps://arxiv.org/abs/0708.0216
dc.identifierhttp://arxiv.org/abs/0708.0216
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135424
dc.subjectMesoscale and Nanoscale Physics
dc.titleModulation effects on Landau levels in a monolayer graphene
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