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Carrier Transport in Armchair and Zigzag Graphene Nanoribbons

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Abstract

The conductivity of armchair and zigzag graphene nanoribbons in the presence of Coulomb scattering due to the charged impurities is investigated theoretically based on the Boltzmann transport equation formalism. The influence of different relevant physical parameters on the conductivity is examined. It is found that the combined effects of Fermi energy, impurity density, distance between impurity carriers, and width of the graphene strips are all able to modify the conductivity of graphene nanoribbons. The conductivity show an increasing trend by increase of Fermi energy and width, which is assigned to the increase of the occupied sub-bands number. Our numerical results predict that the conductivity of zigzag and armchair nanoribbons are qualitatively similar.

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The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Arak University, Arāk, 38156-8-8349, Iran

    Mohammad Reza Jafari & Tahereh Abolghasemi

  2. Department of Physics, Tafresh University, Tafresh, 39518-79611, Iran

    Bahram Bahrami

Authors
  1. Mohammad Reza Jafari
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  2. Bahram Bahrami
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  3. Tahereh Abolghasemi
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Correspondence to Mohammad Reza Jafari.

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Jafari, M.R., Bahrami, B. & Abolghasemi, T. Carrier Transport in Armchair and Zigzag Graphene Nanoribbons. J. Electron. Mater. 46, 573–578 (2017). https://doi.org/10.1007/s11664-016-4933-3

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  • DOI: https://doi.org/10.1007/s11664-016-4933-3

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