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

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

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

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 18 cm -1 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-WignerFano 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 1558 cm -1 couples with the electronic continuum and survives until the saturated doping stage.

Original languageEnglish
Article number113404
Pages (from-to)1134041-1134044
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number11
Publication statusPublished - 2003 Mar 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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