title: Measurements of contact specific low-bias negative differential resistance of single metalorganic molecular junctions.
abstract: Negative differential resistance (NDR) behaviors of single molecule junctions composed of a thiol-terminated Ru(ii) bis-terpyridine (Ru(tpy-SH)2) molecule sandwiched between two gold electrodes are measured using a specifically modified scanning probe microscope break junction technique (SPMBJ) at room temperature. The low-bias (0.623 ± 0.135 V) NDR observed for one of the three conductance groups is contact specific and is caused by a bias induced electrode-molecule coupling changes.
authors.affiliation: Single Molecule Study Laboratory, College of Engineering and Nanoscale Science and Engineering Center, University of Georgia, Athens, GA 30602, USA.
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Zhou
authors.forename: Satyabrata
authors.initials: S
authors.lastname: Samanta
authors.forename: Cunlan
authors.initials: C
authors.lastname: Guo
authors.forename: Jason
authors.initials: J
authors.lastname: Locklin
authors.forename: Bingqian
authors.initials: B
authors.lastname: Xu