L. Bartels et al., LATERAL MANIPULATION OF SINGLE CU ATOMS ON FLAT AND STEPPED COPPER SURFACES, Journal of vacuum science & technology. A. Vacuum, surfaces, and films, 16(3), 1998, pp. 1047-1049
Citations number
8
Categorie Soggetti
Physics, Applied","Materials Science, Coatings & Films
We demonstrate that single Cu atoms can be pulled in single hops acros
s stepped and flat Cu surfaces at low temperatures using a scanning tu
nneling microscope. By recording the tip height at constant current du
ring manipulation the hopping length and the position of the tip apex
relative to the substrate lattice, at which a hop is induced, can be m
easured. By this way it is possible to resolve that a Cu atom moves du
ring manipulation on Cu(lll) along [1 (1) over bar 0]-depending on the
chosen gap resistance-either by long hops from one fee adsite to the
next or by shea hops while intermediately occupying hcp sites. On the
''stepped'' Cu(211)-surface hops between adjacent fivefold adsites can
be observed during manipulation along [0 (1) over bar 1]. (C) 1998 Am
erican Vacuum Society. [S0734-2101(98)07303-5].