G' band in double- and triple-walled carbon nanotubes: A Raman study

• Main Authors: Hirschmann, Thomas Ch (Contributor), Muramatsu, Hiroyuki (Author), Seifert, Max (Author), Wurstbauer, Ursula (Author), Parzinger, Eric (Author), Nielsch, Kornelius (Author), Kim, Yoong Ahm (Author), Araujo, Paulo Antonio Trinidade (Author), Dresselhaus, Mildred (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science (Contributor), Massachusetts Institute of Technology. Department of Physics (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society, 2015-02-03T18:02:50Z.
• Subjects: Article
• Online Access: Get fulltext

Double- and triple-walled carbon nanotubes are studied in detail by laser energy-dependent Raman spectroscopy in order to get a deeper understanding about the second-order G[superscript '] band Raman process, general nanotube properties, such as electronic and vibrational properties, and the growth method itself. In this work, the inner nanotubes from the double- and triple-walled carbon nanotubes are produced through the encapsulation of fullerene peapods with high-temperature thermal treatments. We find that the spectral features of the G[superscript '] band, such as the intensity, frequency, linewidth, and line shape are highly sensitive to the annealing temperature variations. We also discuss the triple-peak structure of the G[superscript '] band observed in an individual triple-walled carbon nanotube taken at several laser energies connecting its Raman spectra with that for the G[superscript '] band spectra obtained for bundled triple-walled carbon nanotubes.
National Science Foundation (U.S.) (Grant 1004147)