Electronic and magnetic properties of deformed and defective single wall carbon nanotubes
| Autor: | Yaroslav V. Shtogun, Lilia M. Woods |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Nanotube
Materials science Condensed matter physics Magnetism Band gap Nanotechnology General Chemistry Electronic structure Carbon nanotube Deformation (meteorology) Condensed Matter::Mesoscopic Systems and Quantum Hall Effect law.invention Bond length Condensed Matter::Materials Science law General Materials Science Density functional theory |
| Zdroj: | Carbon. 47:3252-3262 |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2009.07.042 |
| Popis: | The combined effect of radial deformation and defects on the properties of semiconducting single wall carbon nanotubes are studied using density functional theory. A Stone–Thrower–Wales defect, a substitutional nitrogen impurity, and a mono-vacancy at the highest curvature side of a radially strained nanotube are considered. The energies characterizing the deformation and defect formation, the band gap energies, and various bond lengths are calculated. We find that there is magneto-mechanical coupling behavior in the nanotube properties which can be tailored by the degree of radial deformation and the type of defect. The carbon nanotube energetics and magnetism are also explained in terms of electronic structure changes as a function of deformation and types of defects present in the structure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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