Ultrafast generation of fundamental and multiple-order phonon excitations in highly enriched (6,5) single-wall carbon nanotubes

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 Baik, Hiromichi Kataura, Stephen K. Doorn, Christopher J. Stanton, Riichiro Saito, Junichiro Kono, Taiha Joo

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

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 1, and E2 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.

Original languageEnglish
Pages (from-to)1426-1432
Number of pages7
JournalNano Letters
Volume14
Issue number3
DOIs
Publication statusPublished - 2014 Mar 12

Keywords

  • Single-wall carbon nanotubes
  • coherent phonons
  • resonance Raman spectroscopy
  • single chirality

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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