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Localization of the Cu111 surface state by single Cu adatoms.

Authors
  • Olsson, F E
  • Persson, M
  • Borisov, A G
  • Gauyacq, J-P
  • Lagoute, J
  • Fölsch, S
Type
Published Article
Journal
Physical review letters
Publication Date
Nov 12, 2004
Volume
93
Issue
20
Pages
206803–206803
Identifiers
PMID: 15600953
Source
Medline
License
Unknown

Abstract

The Cu adatom-induced localization of the two-dimensional Shockley surface state at the Cu(111) surface was identified from experimental and simulated scanning tunneling microscopy spectra. The localization gives rise to a resonance located just below the surface state band edge. The adatom-induced surface state localization is discussed in terms of the existence theorem for bound states in any attractive two-dimensional potential. We also identify adatom-induced resonance states deriving from atomic orbitals in both experimental and simulated spectra.

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