| Autor: |
A, Jorio, R, Saito, J H, Hafner, C M, Lieber, M, Hunter, T, McClure, G, Dresselhaus, M S, Dresselhaus |
| Rok vydání: |
2000 |
| Zdroj: |
Physical review letters. 86(6) |
| ISSN: |
0031-9007 |
| Popis: |
We show that the Raman scattering technique can give complete structural information for one-dimensional systems, such as carbon nanotubes. Resonant confocal micro-Raman spectroscopy of an (n,m) individual single-wall nanotube makes it possible to assign its chirality uniquely by measuring one radial breathing mode frequency omega(RBM) and using the theory of resonant transitions. A unique chirality assignment can be made for both metallic and semiconducting nanotubes of diameter d(t), using the parameters gamma(0) = 2.9 eV and omega(RBM) = 248/d(t). For example, the strong RBM intensity observed at 156 cm(-1) for 785 nm laser excitation is assigned to the (13,10) metallic chiral nanotube on a Si/SiO2 surface. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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