Electronic Structures of Single-Walled Carbon Nanotubes Determined by NMR
- 21 April 2000
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 288 (5465) , 492-494
- https://doi.org/10.1126/science.288.5465.492
Abstract
Single-walled carbon nanotubes were studied by 13 C nuclear magnetic resonance (NMR). Two types of 13 C nuclear spins were identified with different spin-lattice relaxation rates. The fast-relaxing component, assigned to metallic tubes, followed the relaxation behavior expected in metals, and the density-of-states at the Fermi level increased with decreasing tube diameter. The slow-relaxing component has a significantly lower density-of-states at the Fermi level. Exposure to oxygen has a substantial effect on relaxation rates of both components.Keywords
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