2004/10/08 by Ricardo Perez, Ricardo Pérez, William Que
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Graphene research and applications #Mechanical and Optical Resonators #cond-mat.mtrl-sci #cond-mat.other #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/17/34/l02
4 pages, 3 figures
arxiv created 2004/10/08 · openalex publication_date 2005/08/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We propose a new theoretical interpretation of the electron energy loss spectroscopy results of Pichler et al on bulk carbon nanotube samples. The origin of the nondispersive modes found experimentally has been controversial, and at least three different interpretations have been offered in the literature. From our theoretical results of the loss functions for individual carbon nanotubes based on a tight-binding model, we find that the nondispersive modes could be due to collective electronic modes in chiral carbon nanotubes, while the observed dispersive mode should be due to collective electronic modes in armchair and zigzag carbon nanotubes.