Molecular Wire Junctions: Tuning the Conductance | Zendy

Vladimiro Mújica | Zendy; Abraham Nitzan | Zendy; Supriyo Datta | Zendy; Mark A. Ratner | Zendy; Clifford P. Kubiak | Zendy

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Molecular Wire Junctions: Tuning the Conductance

Author(s) -

Vladimiro Mújica,

Abraham Nitzan,

Supriyo Datta,

Mark A. Ratner,

Clifford P. Kubiak

Publication year - 2002

Publication title -

the journal of physical chemistry b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.864

H-Index - 392

eISSN - 1520-6106

pISSN - 1520-5207

DOI - 10.1021/jp0216427

Subject(s) - conductance , molecular wire , homo/lumo , materials science , electrode , transistor , condensed matter physics , molecule , scattering , electron , field effect transistor , coulomb , nanotechnology , physics , voltage , quantum mechanics

Junctions consisting of two electrodes and a single molecule acting as a wire can be investigated by scanning probe conductance measurements. The conductance for low temperature, short wire structures can be characterizedby the elastic scattering of the electrons, as described by general Landauer formulas. Tuning the bridge energy levels either by field effect transistor (FET)-like behavior (charging) or by chemical bond formation can raise or lower the conductance by moving the poles of the molecular Green's function. For small molecular structures with particular HOMO/LUMO characteristics, functionalization might be a more effective means than Coulomb charging by external gates.

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