title: Molecule-induced interface states dominate charge transport in Si-alkyl-metal junctions.
abstract: Semiconductor-molecule-metal junctions consisting of alkanethiol monolayers self-assembled on both p(+) and n(-) type highly doped Si(111) wires contacted with a 10 µm Au wire in a crossed-wire geometry are examined. Low temperature transport measurements reveal that molecule-induced semiconductor interface states control charge transport across these systems. Inelastic electron tunneling spectroscopy also highlights the strong contribution of the induced interface states to the observed charge transport.
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
authors.forename: Lam H
authors.initials: LH
authors.lastname: Yu
authors.forename: Nadine
authors.initials: N
authors.lastname: Gergel-Hackett
authors.forename: Christopher D
authors.initials: CD
authors.lastname: Zangmeister
authors.forename: Christina A
authors.initials: CA
authors.lastname: Hacker
authors.forename: Curt A
authors.initials: CA
authors.lastname: Richter
authors.forename: James G
authors.initials: JG
authors.lastname: Kushmerick