On the phononic bandgap of carbon nanotubes

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Abstract

On the phononic bandgap of carbon nanotubes (CNTs), we show in what chirality CNTs have phononic bandgaps and its dependence on the diameters of CNTs. We find that, though the rule where CNTs have phononic bandgaps is the same as in the electronic structure case, the diameter dependence is different. The phononic bandgaps of the zigzag-CNTs reveal "three" kinds of diameter dependence due to the anisotropy of graphene phonon band around the K point in k-space. We also show the crossover from one- to two-dimensional characteristics in phononic bandgaps. © 2013 Kohei Yamamoto et al.

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Yamamoto, K., Ishii, H., Kobayashi, N., & Hirose, K. (2013). On the phononic bandgap of carbon nanotubes. Journal of Nanomaterials, 2013. https://doi.org/10.1155/2013/525070

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