STM light emission spectroscopy of Au film

S. Ushioda, Y. Uehara, M. Kuwahara

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


We have measured the STM light emission (STM-LE) spectra of a Au film evaporated on a prism-coupler surface. The STM was placed in an ultrahigh-vacuum chamber and the spectra were measured both on the tip side and through the prism. The prism-side emission has a single narrow peak whose position moves with the emission is definitely due to This emission is definitely dur to surface plasmon polaritons (SPP) at the Au/vacuum interface. The tip-side emission spectrum contains three peaks between 1.5 and 1.9 eV. Their origin cannot be determined experimentally. although they are believed to arise from localized surface plasmons (LSP). The STM-LE spectra are extremely sensitive to the surface conditions of the tip and the sample.

Original languageEnglish
Pages (from-to)448-453
Number of pages6
JournalApplied Surface Science
Issue numberC
Publication statusPublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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