Imaging and tunneling spectroscopy of individual iron adsorbates at room temperature

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Erscheinungsjahr:
1995
Medientyp:
Text
Schlagworte:
  • 61.16.Ch
  • 68.60.Bs
  • 81.40.Pq
Beschreibung:
  • We have imaged for the first time individual atoms and small clusters of metal species on a metal substrate at room temperature by means of a scanning tunneling microscope (STM) operated under ultrahigh vacuum conditions. The system we have studied is Fe on W(110), for which a carbon-induced (15×3)-reconstruction of the W(110) substrate has been found to prevent surface diffusion of Fe atoms at 300 K. Upon positioning the STM-tip above individual Fe adsorbates, local tunneling spectra could be obtained. A pronounced empty-state peak at 0.5 eV above the Fermi level has been found, characteristic for individual Fe adsorbates. This peak can serve as a fingerprint for the identification of Fe adsorbate species. © 1996 Springer-Verlag.
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  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
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oai:www.edit.fis.uni-hamburg.de:publications/ca93048a-0924-464b-b23b-0f9941370ebc