Room temperature negative differential resistance of a monolayer molecular rotor device

Mei Xue; Kabehie, Sanaz; Stieg, Adam Z.; Tkatchouk, Ekaterina; Benitez, Diego; Stephenson, Rachel M.; Goddard, William A.; Zink, Jeffrey I.; Wang, Kang L.
August 2009
Applied Physics Letters;8/31/2009, Vol. 95 Issue 9, p093503
Academic Journal
An electrically driven molecular rotor device comprised of a monolayer of redox-active ligated copper compounds sandwiched between a gold electrode and a highly doped P+Si substrate was fabricated. Current-voltage spectroscopy revealed a temperature-dependent negative differential resistance (NDR) associated with the device. Time-dependent density functional theory suggests the source of the observed NDR to be redox-induced ligand rotation around the copper metal center, an explanation consistent with the proposed energy diagram of the device. An observed temperature dependence of the NDR behavior further supports this hypothesis.


Related Articles

  • Determination of the structure of adenine monolayers adsorbed at Au(110)/electrolyte interfaces using reflection anisotropy spectroscopy. Smith, C. I.; Bowfield, A.; Dolan, G. J.; Cuquerella, M. C.; Mansley, C. P.; Fernig, D. G.; Edwards, C.; Weightman, P. // Journal of Chemical Physics;1/28/2009, Vol. 130 Issue 4, pN.PAG 

    Reflection anisotropy spectroscopy (RAS) has been used to show that at saturation coverage adenine adsorbs on the Au(110)/electrolyte interface in a base-stacking configuration with the plane of the bases orientated vertically on the surface and with the long axis of the molecules parallel to...

  • Deep level transient spectroscopy and pseudopotential superlattice calculations for an InAs... Pickenhain, Rainer; Schmidt, Heidemarie // Journal of Applied Physics;7/15/2000, Vol. 88 Issue 2, p948 

    Presents deep level transient spectroscopy measurements and pseudopotential supercell calculations for InAs monolayers embedded in GaAs. Sample preparation; DLTS experiment; ODLTS experiment; Theoretical foundations and results; Charge density of the VBM of GaAs; Value of optical threshold...

  • Rotational relaxation contributions to infrared pressure broadening in ozone. Flannery, C.; Mizugai, Y.; Steinfeld, J. I.; Spencer, M. N. // Journal of Chemical Physics;4/15/1990, Vol. 92 Issue 8, p5164 

    Rotational relaxation times in ozone–ozone collisions have been measured for selected rovibrational levels using the time-resolved infrared double-resonance technique. Rotationally inelastic processes account for at least 90% of the measured pressure-broadening rate. The rotational-state...

  • The rotational spectrum of the weakly bound dimer N2···HBr and the dynamics of the N2 and HBr subunits. Howard, N. W.; Legon, A. C. // Journal of Chemical Physics;1/15/1989, Vol. 90 Issue 2, p672 

    The ground-state rotational spectra of the six isotopomers 14N15N···H79Br, 15N14N···H79Br, 15N2···H79Br, 15N2···H81Br, 15N2···D79Br, and 15N2···D81Br of a weakly bound dimer formed between nitrogen and hydrogen bromide have been detected by...

  • The rotational spectrum, internal rotation, and structure of H2O–NCCN and D2O–NCCN. Lee, Seonghoon; Suni, Ian I.; Klemperer, William // Journal of Chemical Physics;4/15/1992, Vol. 96 Issue 8, p5577 

    The radio frequency and microwave spectra of H2O–NCCN and D2O–NCCN have been measured using molecular beam electric resonance spectroscopy. The spectrum is characteristic of a planar T-shaped asymmetric top in which the H2O subunit exhibits hindered twofold internal rotation. The...

  • SFG and DFG investigation of Au(111), Au(210), polycrystalline Au, Au–Cu and Au–Ag–Cu electrodes in contact with aqueous solutions containing KCN and 4-cyanopyridine. Bozzini, Benedetto; Busson, Bertrand; Mele, Claudio; Tadjeddine, Abderrahmane // Journal of Applied Electrochemistry;Jul2008, Vol. 38 Issue 7, p897 

    We report on potential-dependent in situ SFG and DFG spectroscopy carried out at Au(111), Au(210), polycrystalline Au, Au–Cu and Au–Ag–Cu electrodes in contact with aqueous solutions containing CN− and 4-cyanopyridine (4CP). Spectroelectrochemical work was complemented...

  • Microcontact patterning of ruthenium gate electrodes by selective area atomic layer deposition. Park, K. J.; Doub, J. M.; Gougousi, T.; Parsons, G. N. // Applied Physics Letters;1/31/2005, Vol. 86 Issue 5, p051903 

    Patterned octadecyltrichlorosilane monolayers are used to inhibit film nucleation, enabling selective area atomic layer deposition (ALD) of ruthenium on SiO2 and HfO2 surfaces using bis-(cyclopentadienyl)ruthenium and oxygen. X-ray photoelectron spectroscopy indicated that OTS could deactivate...

  • Analysis of dynamical behaviour of a rotor with deflection limiters. Isaksson, J.; Frid, A. // Acta Mechanica;1999, Vol. 133 Issue 1-4, p1 

    Examines the dynamical behavior of a rotor running into contact with a non-annular stator. Full and partial annular rub; Theoretical model of a deflection limiting device; Non-dimensional equations; Numerical simulations.

  • Robust balancing for rotating machines. Garvey, S D; Friswell, M I; Williams, E J; Lees, A W; Care, I D // Proceedings of the Institution of Mechanical Engineers -- Part C;Nov2002, Vol. 216 Issue 11, p1117 

    The balancing of rotors divides broadly into two categories: balancing in situ and balancing in a balancing machine. In the latter case, the most common practice is to arrange balance corrections on the rotor such that the net excitations of each of the four in-plane rigid-body modes of the free...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics