| Project/Area Number |
11165216
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas (A)
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| Allocation Type | Single-year Grants |
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
SAITO Riichiro Univ. of Elec. -Commua. Assoc. Prof., 電気通信学部, 助教授 (00178518)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2001)
|
| Budget Amount *help |
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 2000: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 1999: ¥3,400,000 (Direct Cost: ¥3,400,000)
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| Keywords | Carbon nanotubes / chirarity / resonant Raman Scattering / ラマン効果 / 面間相互作用 / オーダN法 |
|---|
| Research Abstract |
1. Resonant Raman experiment and the related theory are presented in Phys. Rev. Lett. in which the angle dependence of the Raman intensity is in good agreement between theory and experiment. The results can assign the symmetry of phonon modes which give different angular dependence.
2. Micro Raman measurement of single nanotube can make it possible to know the chirality (n,m). Using the van Hove singularity calculation, the assignment of (n,m) for metallic and semiconducting nanotube is presented for the first time from the resonant Raman measurement. This result is published in Phys. Rev. Lett.
3. The van Hove singularity of density of states is shown to depend on the magnetic field. We discuss the possible modification of resonant Raman spectroscopy by magnetic field. This work is published in Phys. Rev. B.
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