Molecular transport junctions: Current from electronic excitations in the leads

Details Molecular transport junctions: Current from electronic excitations in the leads Molecular transport junctions: Current from electronic excitations in the leads

2005-11-17

arxiv.org/abs/cond-mat/0511438v1

Phys. Rev. Lett. 96, 166803 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures, submitted to PRL

Scientific paper

10.1103/PhysRevLett.96.166803

Using a model comprising a 2-level bridge connecting free electron reservoirs we show that coupling of a molecular bridge to electron-hole excitations in the leads can markedly effect the source-drain current through a molecular junction.In some cases, e.g. molecules that exhibit strong charge transfer transitions, the contribution from electron-hole excitations can exceed the Landauer elastic current and dominate the observed conduction.

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