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Near-perfect conduction through a ferrocene-based molecular wire

Stephanie A. Getty·Chaiwat Engtrakul·Lixin Wang·Rui Liu·San-Huang Ke·Harold U. Baranger·Weitao Yang·Michael. S. Fuhrer·Lawrence R. Sita
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Abstract

Here we describe the design, single-molecule transport measurements, and theoretical modeling of a ferrocene-based organometallic molecular wire, whose bias-dependent conductance shows a clear Lorentzian form with magnitude exceeding 70% of the conductance quantum G_0. We attribute this unprecedented level of single-molecule conductance to a manifestation of the low-lying molecular resonance and extended orbital network long-predicted for a conjugated organic system. A similar-in-length, all-organic conjugated phenylethynyl oligomer molecular framework shows much lower conductance.

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Stephanie A. Getty, Chaiwat Engtrakul, Lixin Wang, Rui Liu, San-Huang Ke, Harold U. Baranger, Weitao Yang, Michael. S. Fuhrer, Lawrence R. Sita. 2005-02-15. Near-perfect conduction through a ferrocene-based molecular wire. https://doi.org/10.1103/physrevb.71.241401

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