Intensity studies of inelastic electron tunneling spectra

Glenn Agnolet, Darin T. Zimmerman

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Inelastic electron tunneling spectroscopy (IETS) using metal-insulator-metal (MIM) tunnel junctions is an established technique for studying the vibrational modes of molecules adsorbed on metal surfaces. We are examining a new geometry for IETS in which the oxide layer of the MIM junction is replaced by an atomically thin gas film. "Clean" junctions in which the barrier is composed of pure neon exhibit Ohmic behavior except in the region near zero bias. When the neon barrier is doped with acetylene molecules, we observe peaks corresponding to the vibrational modes of these molecules. An analysis of the inelastic peak intensities indicates that dipole scattering is not the principle mechanism of the electron-molecule interaction in this geometry.

Original languageEnglish (US)
Pages (from-to)1842-1843
Number of pages2
JournalPhysica B: Condensed Matter
Volume284-288
Issue numberPART II
DOIs
StatePublished - Jan 1 2000

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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