Single atom extraction by scanning tunneling microscope tip-crash and nanoscale surface engineering

Details Single atom extraction by scanning tunneling microscope tip-crash and nanoscale surface engineering Single atom extraction by scanning tunneling microscope tip-crash and nanoscale surface engineering

2004-09-03

arxiv.org/abs/cond-mat/0409092v1

Physics

Condensed Matter

Materials Science

15 pages including 5 figures

Scientific paper

We report a novel atom extraction mechanism from the native substrate by means of a scanning tunneling microscope tip-crash on a Ag(111) surface at 5 K. Individual atoms are scattered on the surface when a silver coated tip is dipped into the substrate at low tunneling biases. Quantitative analyses reveal that the mechanical energy supplied by the tip-crash dominates the atom extraction process. Application of this procedure is demonstrated by constructing quantum structures using the extracted atoms on an atom-by-atom basis.

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