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arXiv 1806.06962cond-mat.mes-hallquant-ph
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从克莱因到反克莱因隧道在石墨烯调谐Rashba自旋轨道相互作用或双层耦合

From Klein to anti-Klein tunneling in graphene tuning the Rashba spin-orbit interaction or the bilayer coupling

L. Dell'Anna, P. Majari, M. R. Setare

摘要:

我们计算了具有Rashba自旋轨道耦合的单层石墨烯和双层石墨烯中粒子穿过势垒的传输系数。我们表明,在这两种情况下,可以从克莱因隧穿制度,其特征在于完美的正常传输,反克莱因隧穿制度,与完美的正常反射,通过调整单层或双层石墨烯的层间耦合的Rashba自旋轨道耦合。我们表明,中间制度的特点是由一个非单调的行为与振荡和共振的正常传输振幅的耦合和潜在的参数的函数。

英文摘要:

We calculate the transmission coefficient for a particle crossing a potential barrier in monolayer graphene with Rashba spin-orbit coupling and in bilayer graphene. We show that in both the cases one can go from Klein tunneling regime, characterized by perfect normal transmission, to anti-Klein tunneling regime, with perfect normal reflection, by tuning the Rashba spin-orbit coupling for a monolayer or the interplane coupling for a bilayer graphene. We show that the intermediate regime is characterized by a non-monotonic behavior with oscillations and resonances in the normal transmission amplitude as a function of the coupling and of the potential parameters.

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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