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Chirality dependence of electronic band structure and density of states in single-walled carbon nanotubes

Devi Dass, Rakesh Vaid
2017 The African Review of Physics   unpublished

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This paper investigates the role of chirality and its impact on the electronic band structure and the density of states in armchair and zigzag single-walled carbon nanotubes. Electronic band structures and the density of states for various chirality values has been analytically studied and verified using simulation approach. It has been observed that with the increase in chirality, the total number of bands in the electronic band structure gets increased and more Van Hove singularities appears
more » ... n its density of states, which further increases the current capability of the CNTs. The analytical study of band gap and the density of states at Fermi energy (E=0) has been carried out and compared with the data obtained from simulations. The results suggest that the simulated values agree well with the analytical values thus validating the results. The paper also analytically verifies the metallic and semiconducting behavior of the single-walled CNTs.
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Devi Dass, Rakesh Vaid. "Chirality dependence of electronic band structure and density of states in single-walled carbon nanotubes." The African Review of Physics (2017)