Molecular transport junctions: Current from electronic excitations in the leads

Michael Galperin, Abraham Nitzan, Mark A. Ratner

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Abstract

Using a model comprising a two-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.

Original languageEnglish
Article number166803
JournalPhysical review letters
Volume96
Issue number16
DOIs
Publication statusPublished - May 11 2006

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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