The effect of acoustic phonon scattering on the carrier mobility in the semiconducting zigzag single wall carbon nanotubes

Carrier mobilities of the semiconducting single wall carbon nanotubes (SWCNTs) have been studied by using the first-principles calculations with the deformation potential approximation, which only considers the scattering by the longitudinal acoustic phonons based on the adapting Bardeen–Shockley theory [J. Bardeen and W. Shockley, Phys. Rev. 80, 72 (1950)] to one-dimensional case. From the band structures of the semiconducting SWCNTs, we calculated the effective masses, the stretching modulus, the deformation potential constants. We demonstrated that the calculated intrinsic carrier mobility can reach 106 cm2/V s at room temperature, and the carrier mobilities of the semiconducting SWCNTs show the intriguing alternating behavior.

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