title: One-dimensional energy dispersion of single-walled carbon nanotubes by resonant electron scattering.
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, yields a linear energy dispersion near E(F), and indicates 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 wave vector, in good agreement with previous work, but indicate that the electron coherence length is substantially shortened.
authors.affiliation: Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.
authors.forename: Min
authors.initials: M
authors.lastname: Ouyang
authors.forename: Jin-Lin
authors.initials: JL
authors.lastname: Huang
authors.forename: Charles M
authors.initials: CM
authors.lastname: Lieber