13C NMR chemical shift of single-wall carbon nanotubes |
| |
Authors: | Latil S Henrard L Goze Bac C Bernier P Rubio A |
| |
Institution: | Groupe de Dynamique des Phases Condensées, CNRS-Université de Montpellier 2, France. |
| |
Abstract: | We compute the magnetic shielding tensor within the London approximation and estimate the Knight shift of single-wall carbon nanotubes. Our results indicate that high resolution 13C NMR should be able to separate the metallic and insulator character of the nanotubes since a 11 ppm splitting is predicted from the respective resonances. As a model for disorder, bending, and defects in these structures, we investigate the magnetic response of nanotubes with finite size. We get a small line broadening coming from an intrinsic length dependent resonance effect. The nanotube packing is also studied and leads to a 20 ppm broadening which disappears under experimental high-resolution conditions. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|