Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 122, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1842712
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Artificial Au atomic chains with individual Pd impurities were assembled from single metal atoms with a scanning tunneling microscope on a NiAl(110) surface. Scanning tunneling spectroscopy (STS) revealed an electronic resonance 2.15 eV above the Fermi energy localized within 4 Angstrom of single Pd atom impurities and two electronic resonances 2.25 eV and 2.95 eV above the Fermi energy localized within 8 Angstrom of Pd dimer impurities. The emergence of these localized resonances was studied by STS at each stage of the atom-by-atom assembly. Additionally, conductance images of the chains revealed delocalized electronic density oscillations in the pure Au segments of the chains. (C) 2005 American Institute of Physics.
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