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

 
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Kim, Philip
Odom, Teri W.
Huang, Jin-Lin
Lieber, Charles M.
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https://doi.org/10.1103/PhysRevLett.82.1225
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Kim, Philip, Teri W. Odom, Jin-Lin Huang, and Charles M. Lieber. 1999. “Electronic Density of States of Atomically Resolved Single-Walled Carbon Nanotubes: Van Hove Singularities and End States.” Physical Review Letters 82 (6): 1225–28. https://doi.org/10.1103/physrevlett.82.1225.
Abstract
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. [S0031-9007(99)08406-9].
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