title: Nonlinear resistance versus length in single-walled carbon nanotubes.
abstract: In this work fundamental properties of the electrical transport of single-walled carbon nanotubes as a function of their length are investigated. For this purpose, we have developed a new technique that allows us to characterize electronic transport properties of single-walled carbon nanotubes by probing them at different spots. This technique uses scanning force microscopy to make mechanical and electrical nanocontacts at any selected spot of a given image. We have applied this technique to molecules with high intrinsic resistance. The results show a nonlinear resistance vs distance behavior as the nanotube is probed along its length. This is an indication of elastic electronic transport in one-dimensional systems.
authors.affiliation: Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, E-28049, Madrid, Spain.
authors.forename: P J
authors.initials: PJ
authors.lastname: de Pablo
authors.forename: C
authors.initials: C
authors.lastname: Gómez-Navarro
authors.forename: J
authors.initials: J
authors.lastname: Colchero
authors.forename: P A
authors.initials: PA
authors.lastname: Serena
authors.forename: J
authors.initials: J
authors.lastname: Gómez-Herrero
authors.forename: A M
authors.initials: AM
authors.lastname: Baró