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arXiv 0901.4143cond-mat.mes-hall
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金属锯齿形碳纳米管中单个杂质的电导

Conductance through a single impurity in the metallic zigzag carbon nanotube

Po-Yao Chang, Hsiu-Hau Lin

摘要:

我们研究了金属锯齿形碳纳米管中单个杂质的输运,发现电导敏感地依赖于杂质强度和偏压。有趣的是,载流散射态和倏逝模之间的相互作用导致了丰富的现象,包括共振后向散射,完美隧穿和电荷积累。此外,我们还发现了背散射电导与电荷积累之间的对偶关系。最后,讨论了与实验的相关性。

英文摘要:

We investigate transport through a single impurity in metallic zigzag carbon nanotube and find the conductance sensitively depends on the impurity strength and the bias voltage. It is rather interesting that interplay between the current-carrying scattering state and evanescent modes leads to rich phenomena including resonant backward scattering, perfect tunneling and charge accumulations. In addition, we also find a dual relation between the backscattered conductance and the charge accumulation. At the end, relevance to the experiments is discussed.

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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