Transport in Graphene p-n Junctions in Magnetic Field

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dc.creatorShytov, A. V.
dc.creatorGu, Nan
dc.creatorLevitov, L. S.
dc.date2007-08-22
dc.date.accessioned2026-07-07T08:25:00Z
dc.date.available2026-07-07T08:25:00Z
dc.descriptionBallistic transport in graphene p-n junctions in the presence of magnetic field exhibits two distinct regimes: At low fields, transport is partially suppressed by the field. When the field exceeds a certain critical value, the junction is pinched off by the Landau level formation. Transmission and conductance are found in the entire range of fields using Lorentz boost and mapping to the Landau-Zener problem. We show that perfect transmission occurs at a field-dependent collimation angle, indicating that the chiral dynamics of massless Dirac fermions persists at a finite magnetic field. A current switch, utilizing field-tunable collimation angle, is proposed. With a generalization of the developed approach we study transmission through p-n junctions in graphene bilayer.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0708.3081
dc.identifierhttp://arxiv.org/abs/0708.3081
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/136536
dc.subjectMesoscale and Nanoscale Physics
dc.titleTransport in Graphene p-n Junctions in Magnetic Field
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