title: Suppression of tunneling into multiwall carbon nanotubes.
abstract: We have studied tunneling of electrons into multiwall carbon nanotubes (NTs) in NT-gold and NT-NT junctions, the latter created by atomic force microscope manipulation. The tunneling conductance goes to zero as the energy (temperature and bias) is reduced, and the functional form is consistent with a power law. The exponents depend upon sample geometry. The relationship between these results and theories for tunneling into ballistic and disordered metals is discussed.
authors.affiliation: Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA.
authors.forename: A
authors.initials: A
authors.lastname: Bachtold
authors.forename: M
authors.initials: M
authors.lastname: de Jonge
authors.forename: K
authors.initials: K
authors.lastname: Grove-Rasmussen
authors.forename: P L
authors.initials: PL
authors.lastname: McEuen
authors.forename: M
authors.initials: M
authors.lastname: Buitelaar
authors.forename: C
authors.initials: C
authors.lastname: Schönenberger