Selective transmission of Dirac electrons and ballistic magnetoresistance of \textit{n-p} junctions in graphene

Details Selective transmission of Dirac electrons and ballistic magnetoresistance of \textit{n-p} junctions in graphene Selective transmission of Dirac electrons and ballistic magnetoresistance of \textit{n-p} junctions in graphene

2006-03-23

arxiv.org/abs/cond-mat/0603624v1

Phys. Rev. B 74, 041403 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figs

Scientific paper

10.1103/PhysRevB.74.041403

We show that an electrostatically created n-p junction separating the electron and hole gas regions in a graphene monolayer transmits only those quasiparticles that approach it almost perpendicularly to the n-p interface. Such a selective transmission of carriers by a single n-p junction would manifest itself in non-local magnetoresistance effect in arrays of such junctions and determines the unusual Fano factor in the current noise universal for the n-p junctions in graphene.

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