Raman spectra of lithium doped single-walled 0.4 nm carbon nanotubes

J. T. Ye, Z. M. Li, Z. K. Tang, R. Saito

Research output: Contribution to journalArticlepeer-review

Abstract

Using the vapor phase adsorption method, we show that it is possible to intercalate lithium atoms into 0.4-nm diameter single-walled carbon nanotubes. The charge-transfer behavior is studied by resonant Raman spectra. With increasing doping concentration, the radial breathing mode of these tubes shifts to higher frequency by about (formula presented) because the vibration perpendicular to the tube axis is depressed. The G band exhibits conventional softening and downshift behavior. By decomposing the G band by one Breit-Wigner-Fano line shape and three Lorentzians, we found that the softening and downshift is due to the intensity competition between four components. The BWF component at (formula presented) couples with the electronic continuum and survives until the saturated doping stage.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number11
DOIs
Publication statusPublished - 2003

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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