Single-molecule reactions and spectroscopy via vibrational excitation

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21 Citations (Scopus)

Abstract

Inelastic tunnelling spectra of single C4 hydrocarbon molecules adsorbed on the Pd(110) surface are presented. Experimental evidence is given that the symmetry of the molecular orbital into which the tunnelling electron first enters determines which vibrational modes are excited. The action spectrum for cis-2-butene exhibits most of the vibrational modes that are expected to be excited except for v (C = C), which may be because the molecule is π bonded to the substrate, thus making the lifetime of the excited state short.

Original languageEnglish
Pages (from-to)1163-1171
Number of pages9
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume362
Issue number1819
DOIs
Publication statusPublished - 2004 Jun 15

Keywords

  • Inelastic tunnelling
  • Scanning tunnelling microscopy (STM)
  • Single molecule
  • Vibration

ASJC Scopus subject areas

  • Mathematics(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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