Electronic Density of States of Atomically Resolved Single-Walled Carbon Nanotubes: Van Hove Singularities and End States

Philip Kim, Teri W Odom, Jin Lin Huang, Charles M. Lieber

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The electronic densities of states of atomically resolved single-walled carbon nanotubes have been investigated using scanning tunneling microscopy. Peaks in the density of states due to the one-dimensional nanotube band structure have been characterized and compared with tight-binding calculations. In addition, tunneling spectroscopy measurements recorded along the axis of an atomically resolved nanotube were found to exhibit new, low-energy peaks in the density of states near the tube end. Calculations suggest that these features arise from the specific arrangement of carbon atoms that close the nanotube end.

Original languageEnglish
Pages (from-to)1225-1228
Number of pages4
JournalPhysical Review Letters
Issue number6
Publication statusPublished - Feb 8 1999


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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