title: Local pressure-induced metallization of a semiconducting carbon nanotube in a crossed junction.
abstract: The electronic and vibrational density of states of a semiconducting carbon nanotube in a crossed junction was investigated by elastic and inelastic scanning tunneling spectroscopy. The strong radial compression of the nanotube at the junction induces local metallization spatially confined to a few nanometers. The local electronic modifications are correlated with the observed changes in the radial breathing and G band phonon modes, which react very sensitively to local mechanical deformation. In addition, the experiments reveal the crucial contribution of the image charges to the contact potential at nanotube-metal interfaces.
authors.affiliation: Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Vitali
authors.forename: M
authors.initials: M
authors.lastname: Burghard
authors.forename: P
authors.initials: P
authors.lastname: Wahl
authors.forename: M A
authors.initials: MA
authors.lastname: Schneider
authors.forename: K
authors.initials: K
authors.lastname: Kern