Vibrational excitations in single trimetal-molecule transistors.
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.
Chae
Dong-Hun
DH
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.
Berry
John F
JF
Jung
Suyong
S
Cotton
F Albert
FA
Murillo
Carlos A
CA
Yao
Zhen
Z
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
D019216:Metals, Heavy; D009942:Organometallic Compounds; D003300:Copper; D009532:Nickel