We have addressed density of states and electrical conductivity of doped graphene like nanotubes for both zigzag and armchair types in the context of tight binding model hamiltonian. The effects of next nearest neighbor hopping amplitude for electrons and gap parameter on electronic density of states and electrical conductivity have been investigated. Green's function approach has been implemented to find the behavior of electrical conductivity of nanotube within linear response theory. We have found the temperature dependence of electrical conductivity for different values of gap parameter and tube diameter in the presence of neat nearest neighbor hopping integral. The results of electrical conductivity show the increase of diameter leads to increase the conductivity of both zigzag and armchair nanotubes. However the increase of chemical potential reduces the conductivity of armchair nanotube. In the presence of next-to-nearest neighbor hopping amplitude, the density of states results of nanotubes loses its symmetry with respect to energy

中文翻译：

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近邻跳跃幅度对类石墨烯纳米管结构电学性质的影响

我们已经在紧密结合模型汉密尔顿的背景下解决了锯齿形和扶手椅类型的掺杂石墨烯（如纳米管）的状态密度和电导率。已经研究了电子的下一个最近邻跳跃幅度和间隙参数对电子态密度和电导率的影响。已实施格林函数方法以在线性响应理论内找到纳米管的电导率行为。我们已经发现在存在整洁的最近邻跳跃积分的情况下，对于不同的间隙参数和管直径值，电导率的温度依赖性。电导率的结果表明，直径的增加导致锯齿形和扶手椅纳米管的电导率增加。然而，化学势的增加降低了扶手椅纳米管的导电性。在存在紧邻跳跃幅度的情况下，纳米管的态密度结果失去了其能量对称性