Length-Dependent Transport in Molecular Junctions Based on SAMs of Alkanethiols and Alkanedithiols: Effect of Metal Work Function and Applied Bias on Tunneling Efficiency and Contact Resistance

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed

Vincent B. Engelkes

2004

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  • In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed
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  • Nanoscopic tunnel junctions were formed by contacting Au, Pt, or Ag-coated atomic force microscopy tips to self-assembled monolayers of alkanethiol or alkanedithiol molecules on polycrystalline Au, Pt, or Ag substrates
  • The contact resistance, R0, extrapolated from resistance versus molecular length plots showed a notable decrease with both applied bias and increasing electrode work function
  • The resistance versus length data were used to calculate transmission values for each type of contact and the transmission per C−C bond

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