Detection of the frustrated rotation mode of CO on Cu(0 0 1) by very low energy photoelectron spectroscopy

R. Arafune, K. Hayashi, S. Ueda, Y. Uehara, S. Ushioda

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We have measured the very low energy photoelectron spectra of the clean and CO covered Cu(0 0 1) surfaces at low temperature (15 K). A step at 34.5 meV below the Fermi level appeared in the CO/Cu(0 0 1) spectra, while no structure was found at the same position in the clean Cu(0 0 1) spectrum. Furthermore, we have succeeded in measuring the spectral shift of the step to 33.2 meV below the Fermi level by isotopic substitution of the CO molecule. We have concluded that this step originates from the inelastic scattering of photoelectrons through excitation of the frustrated rotation mode of the CO molecule.

Original languageEnglish
Pages (from-to)3536-3539
Number of pages4
JournalSurface Science
Volume600
Issue number18
DOIs
Publication statusPublished - 2006 Sep 15

Keywords

  • Carbon monoxide
  • Copper
  • Inelastic scattering
  • Low index single crystal surface
  • Molecular vibration
  • Photoelectron spectroscopy
  • Photoemission

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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