1. Large Magnetic Susceptibility Anisotropy of Metallic Carbon Nanotubes
- Author
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Searles, T. A., Imanaka, Y., Takamasu, T., Ajiki, H., Fagan, J. A., Hobbie, E. K., and Kono, J.
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Materials Science - Abstract
Through magnetic linear dichroism spectroscopy, the magnetic susceptibility anisotropy of metallic single-walled carbon nanotubes has been extracted and found to be 2-4 times greater than values for semiconducting single-walled carbon nanotubes. This large anisotropy is consistent with our calculations and can be understood in terms of large orbital paramagnetism of electrons in metallic nanotubes arising from the Aharonov-Bohm-phase-induced gap opening in a parallel field. We also compare our values with previous work for semiconducting nanotubes, which confirm a break from the prediction that the magnetic susceptibility anisotropy increases linearly with the diameter., Comment: 4 pages, 4 figures
- Published
- 2010
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