title: Single-molecule junctions with strong molecule-electrode coupling.
abstract: We fabricated Au-TTF-Au (tetrathiafulvalene, TTF) and Au-TSF-Au (tetraselenafulvalene, TSF) single-molecule junctions using a nanofabricated mechanically controllable break junction. We found that Au-TSF-Au and Au-TTF-Au single-molecule junctions have one and two stable configurations, respectively, and that the Au-TTF-Au single-molecule conductance is larger than that of Au-TSF-Au. The difference in single-molecule conductances of the two types of junctions originates from the difference in the strength of the molecule-electrode coupling through face-to-face overlapping configurations.
authors.affiliation: The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan. taniguti@sanken.osaka-u.ac.jp
authors.forename: Masateru
authors.initials: M
authors.lastname: Taniguchi
authors.forename: Makusu
authors.initials: M
authors.lastname: Tsutsui
authors.forename: Kohei
authors.initials: K
authors.lastname: Shoji
authors.forename: Hideki
authors.initials: H
authors.lastname: Fujiwara
authors.forename: Tomoji
authors.initials: T
authors.lastname: Kawai