Visualization and Spectroscopy of a Metal-Molecule-Metal Bridge

Nazin, George V.; Qiu, X. H.; Ho, W.

doi:10.1126/science.1088971

Cited by 342 publications

(290 citation statements)

References 35 publications

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“…[151,152] Ho et al [151] reported the ingenious assembly of a copper(II) phthalocyanine molecule between two Au atomic chains on a NiAl(110) substrate by manipulation of single atoms by STM tips. This innovative metalmolecule-metal junction provided a new way for electronic characterization of single molecules and their contacts with metal electrodes.…”

Section: Scanning Probe Lithography and Manipulation Of Single Atomsmentioning

confidence: 99%

Nanogap Electrodes

2009

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Nanogap electrodes (namely, a pair of electrodes with a nanometer gap) are fundamental building blocks for the fabrication of nanometer‐sized devices and circuits. They are also important tools for the examination of material properties at the nanometer scale, even at the molecular scale. In this review, the techniques for the fabrication of nanogap electrodes, the preparation of assembled devices based on the nanogap electrodes, and the potential application of these nanodevices for analysis of material properties are introduced. The history, the research status, and the prospects of nanogap electrodes are also discussed.

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Section: Scanning Probe Lithography and Manipulation Of Single Atomsmentioning

confidence: 99%

Nanogap Electrodes

2009

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“…3; Both models are possible to occur in experiments. 7,25,26,27,28,29,30,31,32,33,34 We also consider two different molecule-lead contacts, through a flat Au surface or through an apex Au atom, both of which are also possible to occur in experiments. 7,25,26,27,28,33,34 We adopt a single-particle Green function method 35,36 combining a Landauer formula with ab initio DFT 37 electronic structure calculation to investigate the electron transport through the junctions.…”

Section: Computationmentioning

confidence: 99%

Electron transport through single conjugated organic molecules: Basis set effects in ab initio calculations

Baranger

Yang

2007

The Journal of Chemical Physics

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We investigate electron transport through single conjugated molecules -including benzenedithiol, oligophenylene-ethynylenes of different lengths, and a ferrocene-containing molecule sandwiched between two gold electrodes with different contact structures -by using a single-particle Green function method combined with density functional theory calculation. We focus on the effect of the basis set in the ab initio calculation. It is shown that the position of the Fermi energy in the transport gap is sensitive to the molecule-lead charge transfer which is affected by the size of basis set. This can dramatically change, by orders of magnitude, the conductance for long molecules, though the effect is only minor for short ones. A resonance around the Fermi energy tends to pin the position of the Fermi energy and suppress this effect. The result is discussed in comparison with experimental data.

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“…Nonequilibrium Green's function calculations reproduce the trend of the conductance and visualize the current flow through the junction, which is guided through moleculeelectrode chemical bonds. The transport of electrons through molecules is relevant for processes in many branches of science and important for potential applications in electrical engineering [1][2][3][4][5][6][7][8][9][10][11]. While the importance of atomic structure and bonding for transport through single-molecule junctions has repeatedly been emphasized, investigations with atomic-scale control of the junction geometry are scarce.…”

Section: Atomic-scale Control Of Electron Transport Through Single Momentioning

confidence: 99%