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arXiv · 1206.3753

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 in magneto-oscillations in the current transmission through the interface with periodicity similar to Shubnikov-de Haas oscillations.

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Aavishkar A. Patel, Nathan Davies, Vadim Cheianov, Vladimir I. Fal'ko. 2012-06-17. Classical and quantum magneto-oscillations of current flow near a p-n junction in graphene. https://doi.org/10.1103/physrevb.86.081413

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