Open AccessTHE MANIPULATION OF A SINGLE AL ATOM ON AL (111) SURFACE
Author(s) -
Fu-He Wang,
Jiali Yang,
Jiaming Li
Publication year - 1998
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.1827
Subject(s) - atom (system on chip) , surface (topology) , materials science , atomic physics , physics , computer science , geometry , mathematics , embedded system
In order to elucidate the action of the STM tip in the manipulation of atom on a sample surface, the interaction between W tip atom and sample Al(111) surface atom is studied with cluster model by employing the first principles method—discrete variational method. The calculated results show that if the distance S between the tip and sample surface is short enough (S≤10 a.u.), when the sample surface Al atom, which is just under the W trp, escapes from the surface, it fells a stable potential well. This indicates that even without an external field, the Al atom can be extracted from the sample surface to the tip ty the attraction of the W tip, if the tip is very close to the sample surface.