The effects of electronphonon interaction on the temperature dependence of the specific heat of (10, 0) zigzag semiconducting carbon nanotubes are studied. The Green's function formalism within the Holstein Hamiltonian model is used. It is found that the electronic specific heat capacity gives different behaviors in two temperature regions. In the low-temperature region, the electronphonon interaction causes the specific heat to increase due to the band gap decreasing, whereas the heat capacity decreases in the high temperature region due to the excitation spectrum decreasing.
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