One-Dimensional Energy Dispersion of Single-Walled Carbon Nanotubes by Resonant Electron Scattering
arXiv:cond-mat/0107580 · doi:10.1103/PhysRevLett.88.066804
Abstract
We characterized the energy band dispersion near the Fermi level in single-walled carbon nanotubes using low-temperature scanning tunneling microscopy. Analysis of energy dependent standing wave oscillations, which result from quantum interference of electrons resonantly scattered by defects, yield a linear energy dispersion near EF, and indicate the importance of parity in scattering for armchair single-walled carbon nanotubes. Additionally, these data provide values of the tight-binding overlap integral and Fermi wavevector in good agreement with previous work, but indicate that the electron coherence length is substantially shortened.
5 pages, 3 figures
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