Bibliographic Details
| Title: |
Dephasing of G-Band Phonons in Single-Wall Carbon Nanotubes Probed via Impulsive Stimulated Raman Scattering |
| Authors: |
Kim, J. -H., Yee, K. -J., Lim, Y. -S., Booshehri, L. G., Haroz, E. H., Kono, J. |
| Source: |
Physical Review B 86, 161415(R) (2012) |
| Publication Year: |
2011 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| More Details: |
We have studied the coherent dynamics of G-band phonons in single-walled carbon nanotubes through impulsive stimulated Stokes and anti-Stokes Raman scattering. The probe energy dependence of phonon amplitude as well as preferential occurrence between Stokes and anti-Stokes components in response to chirped-pulse excitation are well explained within our model. The temperature dependence of the observed dephasing rate clearly exhibits a thermally-activated component, with an activation energy that coincides with the frequency of the radial breathing mode (RBM). This fact provides a clear picture for the dephasing of optical phonons by random frequency modulation via interaction with the RBM through anharmonicity.
Comment: 4 pages, 4 figures |
| Document Type: |
Working Paper |
| DOI: |
10.1103/PhysRevB.86.161415 |
| Access URL: |
http://arxiv.org/abs/1106.2858 |
| Accession Number: |
edsarx.1106.2858 |
| Database: |
arXiv |
