Origin of Discrepancies in Inelastic Electron Tunneling Spectra of Molecular Junctions
Mesoscale and Nanoscale Physics
2009-11-13 v1 Other Condensed Matter
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)].
Keywords
Cite
@article{arxiv.0704.1775,
title = {Origin of Discrepancies in Inelastic Electron Tunneling Spectra of Molecular Junctions},
author = {Lam H. Yu and Christopher D. Zangmeister and James G. Kushmerick},
journal= {arXiv preprint arXiv:0704.1775},
year = {2009}
}
Comments
4 pages, 4 figures accepted for publication in Physical Review Letters