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Lecture Lucia Vitali


01 December 2006 FWN-Building 5114.0004, Nijenborgh 4, 9747 AG, Groningen
Speaker:Dr. Lucia Vitali
Affiliation:Max-Planck-Insitute for solid state research, Stuttgart, Germany
Title:Phonons of carbon nanostructures: a local study with inelastic electrom tunneling spectroscopy
Date:Fri Dec 1, 2006
Location:FWN-Building 5114.0004
Host:P. Rudolf
Telephone:+31 50 363 4736


The phonon spectrum of HOPG and of single wall carbon nanotubes was studied with inelastic electron tunneling spectroscopy using a low temperature STM. The measured inelastic spectrum of graphite is found to be directly proportional to the calculated vibrational density of states. Similarly, the phonon spectrum of single wall carbon nanotubes adsorbed on Au substrates was measured. On the low energy part of the spectrum the radial breathing mode (RBM) has been identified. Furthermore, based on the high spacial resolution typical of the scanning tunneling technique, the behavior of the RBM becomes accessible in close proximity to topological defects, like intermolecular junctions, tube endings, or crossed junctions of tubes where the tube cage is sensitively deformed.
Last modified:22 October 2012 2.30 p.m.