Near-perfect conduction through a ferrocene-based molecular wire

Details Near-perfect conduction through a ferrocene-based molecular wire Near-perfect conduction through a ferrocene-based molecular wire

2004-09-16

arxiv.org/abs/cond-mat/0409433v3

Physical Review B Rapid Communications 71, 241401 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages text, 4 figures, 4 pages supplementary material; re-submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevB.71.241401

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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