• Electrical conductivity of metal–carbon nanotube structures: Effect of length and doping

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/037/05/1047-1051

    • Keywords

       

      Density functional theory; non-equilibrium green function; carbon nanotube; silicon; conductance.

    • Abstract

       

      The electrical properties of asymmetric metal–carbon nanotube (CNT) structures have been studied using density functional theory and non-equilibrium Green’s function method with Atomistix tool kit. The models with asymmetric metal contacts and carbon nanotube bear resemblance to experimental set-ups. The study shows the effect of varying length of carbon nanotube on electronic transmission and conductance of various structures. The effects of silicon doping on CNT-based structures have also been studied. The conductance of structure with longer CNT is more compared with shorter CNT. Silicon doping increases the conductivity of carbon nanotube-based structure.

    • Author Affiliations

       

      R Nigam1 S Habeeb2 A Priyadarshi3 N Jaggi1

      1. Department of Physics, National Institute of Technology, Kurukshetra 136 119, India
      2. Department of Physics, Jamia Millia Islamia, New Delhi 110 025, India
      3. Carlsys Technologies Private Limited, New Delhi 110 092, India
    • Dates

       

© 2017 Indian Academy of Sciences, Bengaluru.