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arXiv 1609.06648cond-mat.mes-hall
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磁场作用下具有横向界面的电选通石墨烯带的巨磁电阻效应

Giant tunable magnetoresistance of electrically gated graphene ribbon with lateral interface under magnetic field

A. M. Kadigrobov

摘要:

研究了磁场作用下具有横向n-p结和e-n-p结的电选通石墨烯带的量子动力学和动力学。结果表明,准粒子沿n-p界面跳跃的蛇形态在带电导的主要半经典部分不出现。预测和解析计算了n-pn结带电导的巨振荡。根据带内结的数量,通过磁场或栅极电压的极小变化,其磁阻可以可控地改变50% - 90%。

英文摘要:

Quantum dynamics and kinetics of electrically gated graphene ribbons with lateral n-p and e-n-p junctions under magnetic field are investigated. It is shown that the snake-like states of quasiparticles skipping along the n-p interface do not manifest themselve in the main semiclassical part of the ribbon conductance. Giant oscillations of the conductance of a ribbon with an n-p-n junction are predicted and analytically calculated. Depending on the number of junctions inside the ribbon its magnetoresistance may be controllably changed by 50% - 90% by an extremely small change of the magnetic field or the gate voltage.

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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