Ultrafast Generation of Fundamental and Multiple-order Phonon Excitations in Highly-Enriched (6,5) Single-Wall Carbon Nanotubes
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SCOPUS
- Title
- Ultrafast Generation of Fundamental and Multiple-order Phonon Excitations in Highly-Enriched (6,5) Single-Wall Carbon Nanotubes
- Authors
- Yong-Sik Lim; Ahmad R. T. Nugraha; Sung-Jae Cho; Min-Young Noh; Eun-Jin Yoon; Huaping Liu; Ji-Hee Kim; Hagen Telg; Erik H. Hároz; Gary D. Sanders; Sung-Hoon Baki; Hiromichi Kataura; Stephen K. Doorn; Christopher J. Stanton; Riichiro Saito; Junichiro Kono; Kono, J; Joo, T
- Date Issued
- 2014-03
- Publisher
- American Chemical Society
- Abstract
- Using a macroscopic ensemble of highly enriched (6,5) single-wall carbon nanotubes, combined with high signal-to-noise ratio and time-dependent differential transmission spectroscopy, we have generated vibrational modes in an ultrawide spectral range (10-3000 cm(-1)). A total of 14 modes were clearly resolved and identified, including fundamental modes of A, E and E-2 symmetries and their combinational modes involving two and three phonons. Through comparison with continuous wave Raman spectra as well as calculations based on an extended tight-binding model, we were able to identify all the observed peaks and determine the frequencies of the individual and combined modes. We provide a full summary of phonon frequencies for (6,5) nanotubes that can serve as a basic reference with which to refine our understanding of nanotube phonon spectra as well as a testbed for new theoretical models.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/27335
- DOI
- 10.1021/NL404536B
- ISSN
- 1530-6992
- Article Type
- Article
- Citation
- NANO LETTERS, vol. 14, no. 3, page. 1426 - 1432, 2014-03
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