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arXiv 1206.3753cond-mat.mes-hall
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石墨烯中pn结附近电流的经典和量子磁振荡

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

摘要:

所提出的半经典理论预测了在强磁场中,从石墨烯中弹道pn结附近的点源注入的电流流动中的两种类型的振荡。一个起源于经典效应的聚束的回旋轨道的电子来回通过的p-n界面,这显示出显着的依赖性之间的回旋半径在n-和p-区域。另一种效应是由两侧载流子密度相等的pn结中单色电子波的干涉引起的,它包括通过界面的电流传输中的磁振荡,其周期性类似于Shubnikov-de Haas振荡。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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