Finite size effects in carbon nanotubes

Wu, Jian; Jian Wu; Duan, Wenhui; Wenhui Duan; Gu, Bing-Lin; Bing-Lin Gu; Yu, Jing-Zhi; Jing-Zhi Yu; Kawazoe, Yoshiyuki
October 2000
Applied Physics Letters;10/16/2000, Vol. 77 Issue 16
Academic Journal
The low-energy theory for finite long carbon nanotube is derived and numerically examined. It shows that the electronic structure is dominated by the quantum confining, which determines the profile of wave functions as well as the eigen energies; while the details of the wave functions are resolved by the structure of the nanotubes. This behavior is attributed to the peculiar electronic structure of the nanotubes. Because of the slow variation of the profile of electron wave functions, the measured conductance is NOT independent of the position to measure it, which is evident in the multiprobe experiment. © 2000 American Institute of Physics.


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