Nonlinear conductance reveals positions of carbon atoms in metallic single-wall carbon nanotubes |
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| Authors: | P. Partovi-Azar and A. Namiranian |
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| Affiliation: | (1) Institute for Electronics, Microelectronics, and Nanotechnology (IEMN), CNSR-UMR 8520, 60069, 59652 Villeneuve d’Ascq Cedex, France;(2) European Theoretical Spectroscopy Facility (ETSF), Departamento de F?sica de Materiales, Universidad del Pa?s Vasco, Edificio Korta, Avda, Tolosa 72, 20018 San Sebasti?n, Spain;(3);; |
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| Abstract: | Nonlinear quantum conductance in finite metallic single-wall carbon nanotubes due to presence of a single defect has been studied theoretically using π-orbital tight-binding model. The correction to the conductance induced by defects is sensitively dependent on wavefunction amplitudes of contributing electronic states. It has been shown that by calculating this correction to the first order, we can delineate the position of carbon atoms on tubular surface. It can also be used to specify the SWCNT at hand and its level spacing. |
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