Current-voltage characteristics of tunneling molecular junctions for off-resonance injection

Vladimiro Mujica, Mark A. Ratner

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

An analytical expression is obtained for the I-V curves for a tight-binding model of a molecule-metal junction for off-resonance injection. The derivation takes into account a self-consistent determination of the voltage that leads to a spatial pattern where the voltage drop occurs at the molecule-wire interface. The relevance of this model for electron transfer reactions and molecular conductance is assessed. It leads to a striking power law dependence of the current on the voltage, while preserving the exponential length dependence of either the conductance or the reaction rate.

Original languageEnglish (US)
Pages (from-to)365-370
Number of pages6
JournalChemical Physics
Volume264
Issue number3
DOIs
StatePublished - Mar 1 2001
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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