title: Vibrational excitations in single trimetal-molecule transistors.
abstract: Single-molecule transistors incorporating trimetal molecules of Cu(3)(dpa)(4)Cl(2) and Ni(3)(dpa)(4)Cl(2) (dpa = 2,2'-dipyridylamide) have been fabricated. Conductance is measured as a function of bias and gate voltages at low temperature, showing single-electron tunneling behavior through the molecules. Additional structures corresponding to the excitations in the molecules are observed, which can be attributed to intramolecular vibrational excitations coupled to the electron tunneling processes. The energies of the vibrational states are dependent on the redox state of the included molecules.
authors.affiliation: Department of Physics, Center for Nano- and Molecular Science and Technology, and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA.
authors.forename: Dong-Hun
authors.initials: DH
authors.lastname: Chae
authors.forename: John F
authors.initials: JF
authors.lastname: Berry
authors.forename: Suyong
authors.initials: S
authors.lastname: Jung
authors.forename: F Albert
authors.initials: FA
authors.lastname: Cotton
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Murillo
authors.forename: Zhen
authors.initials: Z
authors.lastname: Yao
mesh_terms: D003300:Copper / Q000737:chemistry; D019216:Metals, Heavy / Q000737:chemistry*; D018625:Microscopy, Atomic Force / Q000379:methods; D009532:Nickel / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D012680:Sensitivity and Specificity; D013499:Surface Properties; D013696:Temperature; D014173:Transistors, Electronic; D014732:Vibration
chemical_list: D019216:Metals, Heavy; D009942:Organometallic Compounds; D003300:Copper; D009532:Nickel