Classical and quantum magneto-oscillations of current flow near a p-n junction in graphene

Aavishkar A. Patel; Nathan Davies; Vadim Cheianov; Vladimir I. Fal'Ko

doi:10.1103/PhysRevB.86.081413

Classical and quantum magneto-oscillations of current flow near a p-n junction in graphene

Aavishkar A. Patel, Nathan Davies, Vadim Cheianov, Vladimir I. Fal'Ko

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Abstract

The proposed semiclassical theory predicts two types of oscillations in the flow of current injected from a point source near a ballistic p-n junction in graphene in a strong magnetic field. One originates from the classical effect of bunching of cyclotron orbits of electrons passing back and forth across the p-n interface, which displays a pronounced dependence on the commensurability between the cyclotron radii in the n and p regions. The other effect is caused by the interference of monochromatic electron waves in p-n junctions with equal carrier densities on the two sides and it consists of magneto-oscillations in the current transmission through the interface with periodicity similar to Shubnikov-de Haas oscillations.

Original language	English
Article number	081413
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	86
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.86.081413
Publication status	Published - 20 Aug 2012

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abstract = "The proposed semiclassical theory predicts two types of oscillations in the flow of current injected from a point source near a ballistic p-n junction in graphene in a strong magnetic field. One originates from the classical effect of bunching of cyclotron orbits of electrons passing back and forth across the p-n interface, which displays a pronounced dependence on the commensurability between the cyclotron radii in the n and p regions. The other effect is caused by the interference of monochromatic electron waves in p-n junctions with equal carrier densities on the two sides and it consists of magneto-oscillations in the current transmission through the interface with periodicity similar to Shubnikov-de Haas oscillations.",

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AU - Davies, Nathan

AU - Cheianov, Vadim

AU - Fal'Ko, Vladimir I.

PY - 2012/8/20

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AB - The proposed semiclassical theory predicts two types of oscillations in the flow of current injected from a point source near a ballistic p-n junction in graphene in a strong magnetic field. One originates from the classical effect of bunching of cyclotron orbits of electrons passing back and forth across the p-n interface, which displays a pronounced dependence on the commensurability between the cyclotron radii in the n and p regions. The other effect is caused by the interference of monochromatic electron waves in p-n junctions with equal carrier densities on the two sides and it consists of magneto-oscillations in the current transmission through the interface with periodicity similar to Shubnikov-de Haas oscillations.

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Classical and quantum magneto-oscillations of current flow near a p-n junction in graphene

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