Conductance through a single impurity in the metallic zigzag carbon nanotube

Po-Yao Chang; Hsiu-Hau Lin

doi:10.1063/1.3213546

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arXiv · 0901.4143

Conductance through a single impurity in the metallic zigzag carbon nanotube

Po-Yao Chang·Hsiu-Hau Lin

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Abstract

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.

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Po-Yao Chang, Hsiu-Hau Lin. 2009-01-26. Conductance through a single impurity in the metallic zigzag carbon nanotube. https://doi.org/10.1063/1.3213546

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