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Electronic transport properties of carbon nanotoroids

机译:碳纳米环的电子输运性质

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We investigate the electronic transport properties of carbon nanotori covalently connected to external electrodes made up of carbon nanotubes of various chiralities. The study is based on computing ballistic transport characteristics within the framework of Green's function theory using a simple π-orbital tight-binding model. The calculations focus on the effect of the relative angle made by the electrodes as they are placed at different positions along the nanoring. The conductance behavior is found to depend on the details of the atomic structure of the torus but also on the positions of the electrodes. Our findings are rationalized using an elementary quantum mechanical interference model, which reproduces well the main features of the numerical data.
机译:我们研究共价连接到由各种手性的碳纳米管组成的外部电极的碳纳米托里的电子传输性能。该研究基于格林函数理论框架内使用简单的π轨道紧密结合模型计算弹道运输特性。这些计算集中在电极沿纳米环放置在不同位置时所产生的相对角度的影响。发现电导行为取决于环面原子结构的细节,还取决于电极的位置。我们的发现使用基本的量子机械干涉模型进行了合理化,该模型很好地再现了数值数据的主要特征。

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