Band Structure and Density of States Computational Analysis of mSWCNT for different Structural Parameters

The paper intends to present band structure, density of states and lowest subband Pz tight binding computational analysis of mSWCNT. As the criterion is limited to metallic SWCNT hence armchair chirality is considered and analytical computation utilizes nearest neighbor tight binding (NNTB) approximation. The parameters of DOS are obtained by varying cylindrical dimension. The results conclude the dependence of peak of DOS on CNT’s physical dimensions such as tube radius, bandgap reduction and decrement of nearest neighbor distance.