Chemical fingerprinting at the atomic level with scanning tunneling spectroscopy

Koji S. Nakayama, Tomoko Sugano, Kenji Ohmori, A. W. Signor, J. H. Weaver

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Scanning tunneling spectroscopy (STS) based on scanning tunneling microscopy (STM) makes it possible to map the local electronic density of states for clean surfaces and for those with adsorbates. We have developed a protocol that allows us to obtain the spectral fingerprints of halogen atoms on Si(0 0 1), and we use those fingerprints to distinguish between adatom species for surfaces with Cl and Br mixed adsorbates. The key to the process is the energy distribution of the antibonding states that depend on the halogen species.

Original languageEnglish
Pages (from-to)716-723
Number of pages8
JournalSurface Science
Issue number3
Publication statusPublished - 2006 Feb 1


  • Chemical identification
  • Local density of states
  • Scanning tunneling spectroscopy
  • Si(0 0 1) with adsorbed halogens

ASJC Scopus subject areas

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


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