An adjustable oxide-free tunnel junction for vibrational spectroscopy of molecules Academic Article uri icon


  • We describe an adjustable, oxide-free, tunnel junction with the stability necessary to observe the vibrational modes of molecules adsorbed on clean metal surfaces. We illustrate the capabilities of this device with inelastic tunneling data from junctions whose barriers are formed by neon/acetylene mixtures of varying concentration. From the concentration dependence of the inelastic spectra, we can distinguish between acetylene molecules chemisorbed on the metal electrodes and those that are either physisorbed or incorporated in the neon barrier.

published proceedings


author list (cited authors)

  • Zimmerman, D. T., Weimer, M. B., & Agnolet, G.

citation count

  • 13

complete list of authors

  • Zimmerman, DT||Weimer, MB||Agnolet, G

publication date

  • October 1999