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 G0. 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.

Original languageEnglish
Article number241401
JournalPhysical Review B
Volume71
Issue number24
DOIs
Publication statusPublished - 15 Jun 2005
Externally publishedYes

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