Physics – Condensed Matter – Materials Science
Scientific paper
2001-10-26
Phys. Rev. Lett. 88, 206106 (2002)
Physics
Condensed Matter
Materials Science
4 pages, RevTeX version 4, 4 figures included. Final version: title changed, discussion and figures improved
Scientific paper
10.1103/PhysRevLett.88.206106
The intersection between dislocations and a Ag(111) surface has been studied using an interplay of scanning tunneling microscopy (STM) and molecular dynamics (MD). Whereas the STM provides atomically resolved information about the surface structure and Burgers vectors of the dislocations, the simulations can be used to determine dislocation structure and orientation in the near-surface region. In a similar way, the sub-surface structure of other extended defects can be studied. The simulations show dislocations to reorient the partials in the surface region leading to an increased splitting width at the surface, in agreement with the STM observations. Implications for surface-induced cross slip are discussed.
Besenbacher Flemming
Braun Kai-Felix
Christiansen Jesper
Jacobsen Karsten W.
Lægsgaard Erik
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