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Graphene Nanoribbon in Sharply Localized Magnetic Fields

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arxiv 1103.3999 v2 pith:CUYVFDNO submitted 2011-03-21 cond-mat.mes-hall hep-thmath-phmath.MP

Graphene Nanoribbon in Sharply Localized Magnetic Fields

classification cond-mat.mes-hall hep-thmath-phmath.MP
keywords fieldmagneticlocalizedfieldsgraphenereflectionsharplytransmission
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We study the effect of a sharply localized magnetic field on the electron transport in a strip (ribbon) of graphene sheet, which allows to give results for the transmission and reflection probability through magnetic barriers. The magnetic field is taken as a single and double delta type localized functions, which are treated later as the zero width limit of gaussian fields. For both field configurations, we evaluate analytically and numerically their transmission and reflection coefficients. The possibility of spacial confinement due to the inhomogeneous field configuration is also investigated.

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