title: Electrical conductance of oligothiophene molecular wires.
abstract: A break junction method using a scanning tunneling microscope has been applied to electrical conductance measurement of newly designed oligothiophene molecules terminated with a thiocyanate group. The tunneling conduction was evident from an exponential decay of the conductance as a function of the molecular length up to ca. 6 nm. The tunneling decay constant was estimated to be 0.1 A (-1). The pre-exponential factor was 1.3 x 10 (-6) S, which was smaller than that observed for alkanedithiols.
authors.affiliation: Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
authors.forename: Ryo
authors.initials: R
authors.lastname: Yamada
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kumazawa
authors.forename: Tomoharu
authors.initials: T
authors.lastname: Noutoshi
authors.forename: Shoji
authors.initials: S
authors.lastname: Tanaka
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Tada