Influence of metal-molecule contacts on decay coefficients and specific contact resistances in molecular junctions

Gunuk Wang, Tae Wook Kim, Hyoyoung Lee, Takhee Lee

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The effect of metal-molecule contacts in molecular junctions is studied based on the analysis of a statistically significant number of devices and a proposed multibarrier tunneling (MBT) model, where a metal-molecule-metal junction is divided into three individual barriers: a molecular-chain body and metal-molecule contacts on either side of molecule. Using the MBT model with the statistical analysis, we could derive and distinguish decay coefficients for contact barriers (β1, β2), contact-dependent and contact-independent decay coefficients (β0 vs βbody), and specific contact resistances in terms of different molecular length and different natures of metal-molecule contacts.

Original languageEnglish
Article number205320
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number20
Publication statusPublished - 2007 Nov 20
Externally publishedYes


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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