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Effects of Lattice Vacancy in Carbon Nanotubes Conductance Quantization |
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| Authors: | Masatsura Igami Takeshi Nakanishi Tsuneya Ando |
| Institution: | 1. Institute of Materials Science, University of Tsukuba , Tsukuba, Ibaraki , 305-8573 , Japan;2. Institute of Physics and Chemical Research (RIKEN) , Wako, Saitama , 351-0198 , Japan;3. Institute for Solid State Physics, University of Tokyo , Minato-ku, Tokyo , 106-8666 , Japan |
| Abstract: | Abstract Conductance of carbon nanotubes (CN's) with a lattice vacancy or strong and short-range impurity potential is studied within a tight-binding model. The conductance is quantized into zero, one, or two times the conductance quantum e 2/π? depending on the type of the vacancy if its size is much smaller than the circumference of CN. |
| Keywords: | graphite carbon nanotube recursive Green's function technique Landauer's formula mesoscopic system |