Wave-Packet Dynamics Simulation on Electronic Transport in Carbon Nanotubes with Randomly Distributed Impurities
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概要
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We investigate coherent electronic transport in semiconducting single-walled carbon nanotubes with randomly distributed impurities utilizing the wave-packet dynamics method combined with the mode-space decomposition method, focusing particularly on the case of small hole doping. From the behavior of the time-dependent diffusion coefficient and the diffusion length, we verify that the system exhibits Anderson's localization due to quasi-one-dimensionality of nanotubes. Moreover, we reveal the dependence of impurity-potential strength on the localization length, and consequently we demonstrate that the localization can occur even at room temperature, which is consistent with the recent experimental results.
- 2013-06-25
著者
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Yamamoto Takahiro
Department Of Bioscience And Biotechnology Okayama University
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Takada Yukihiro
Department of Liberal Arts, Faculty of Engineering, Tokyo University of Science, Katsushika, Tokyo 125-8585, Japan
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Yamamoto Takahiro
Department of Liberal Arts, Faculty of Engineering, Tokyo University of Science, Katsushika, Tokyo 125-8585, Japan
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