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首页> 外文期刊>Physica, B. Condensed Matter >Conductance oscillation in graphene-nanoribbon-based electronic Fabry-Perot resonators
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Conductance oscillation in graphene-nanoribbon-based electronic Fabry-Perot resonators

机译：基于石墨烯-纳米碳的电子Fabry-Perot谐振器中的电导振荡

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摘要

By using the tight-binding approximation and the Green's function method, the quantum conductance of the Fabry-Perot-like electronic resonators composed of zigzag and metallic armchair edge graphene nanoribbons (GNRs) was studied numerically. Obtained results show that due to Fabry-Perot-like electronic interference, the conductance of the GNR resonators oscillates periodically with the Fermi energy. The effects of disorders and coupling between the electrodes and the GNR on conductance oscillations were explored. It is found that the conductance oscillations appear at the strong coupling and become resonant peaks as the coupling is very weak. It is also found that the strong disorders in the GNR can smear the conductance oscillation periods. In other words, the weak coupling and the strong disorders all can blur the conductance oscillations, making them unclearly distinguished.
机译：通过紧密结合近似和格林函数方法，对由之字形和金属扶手椅边缘石墨烯纳米带（GNR）组成的法布里-珀罗式电子谐振器的量子电导进行了数值研究。所得结果表明，由于类似Fabry-Perot的电子干扰，GNR谐振器的电导随费米能量周期性地振荡。探索了紊乱和电极与GNR之间的耦合对电导振荡的影响。发现电导振荡出现在强耦合处，并且由于耦合非常弱而变成谐振峰值。还发现，GNR中的强紊乱可能会抹去电导振荡周期。换句话说，弱耦合和强紊乱都会使电导振荡模糊，从而使其不清楚。

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