title: Quantum interference and ballistic transmission in nanotube electron waveguides.
abstract: The electron transport properties of well-contacted individual single-walled carbon nanotubes are investigated in the ballistic regime. Phase coherent transport and electron interference manifest as conductance fluctuations as a function of Fermi energy. Resonance with standing waves in finite-length tubes and localized states due to imperfections are observed for various Fermi energies. Two units of quantum conductance 2G(0) = 4e(2)/h are measured for the first time, corresponding to the maximum conductance limit for ballistic transport in two channels of a nanotube.
authors.affiliation: Department of Chemistry and Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.
authors.forename: J
authors.initials: J
authors.lastname: Kong
authors.forename: E
authors.initials: E
authors.lastname: Yenilmez
authors.forename: T W
authors.initials: TW
authors.lastname: Tombler
authors.forename: W
authors.initials: W
authors.lastname: Kim
authors.forename: H
authors.initials: H
authors.lastname: Dai
authors.forename: R B
authors.initials: RB
authors.lastname: Laughlin
authors.forename: L
authors.initials: L
authors.lastname: Liu
authors.forename: C S
authors.initials: CS
authors.lastname: Jayanthi
authors.forename: S Y
authors.initials: SY
authors.lastname: Wu
mesh_terms: D004579:Electron Transport; D008962:Models, Theoretical