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arXiv · 0704.1775

Origin of Discrepancies in Inelastic Electron Tunneling Spectra of Molecular Junctions

Lam H. Yu·Christopher D. Zangmeister·James G. Kushmerick
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Abstract

We report inelastic electron tunneling spectroscopy (IETS) of multilayer molecular junctions with and without incorporated metal nano-particles. The incorporation of metal nanoparticles into our devices leads to enhanced IET intensity and a modified line-shape for some vibrational modes. The enhancement and line-shape modification are both the result of a low lying hybrid metal nanoparticle-molecule electronic level. These observations explain the apparent discrepancy between earlier IETS measurements of alkane thiolate junctions by Kushmerick \emph{et al.} [Nano Lett. \textbf{4}, 639 (2004)] and Wang \emph{et al.} [Nano Lett. \textbf{4}, 643 (2004)].

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Lam H. Yu, Christopher D. Zangmeister, James G. Kushmerick. 2007-04-13. Origin of Discrepancies in Inelastic Electron Tunneling Spectra of Molecular Junctions. https://doi.org/10.1103/physrevlett.98.206803

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