2002/01/04 by O. Rodriguez de la Fuente, O. Rodrı́guez de la Fuente, Jonathan A. Zimmerman +8 · 1 citation
Engineering · Physics and Astronomy · #Force Microscopy Techniques and Applications #Metal and Thin Film Mechanics #Surface and Thin Film Phenomena #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.88.036101
published as Phys. Rev. Lett. 88, 036101 (2002) · 10 pages, 4 figures
openalex publication_date 2002/01/04 · arxiv created 2002/01/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present a combined study by scanning tunneling microscopy and atomistic simulations of the emission of dissociated dislocation loops by nanoindentation on a (001) fcc surface. The latter consist of two stacking-fault ribbons bounded by Shockley partials and a stair-rod dislocation. These dissociated loops, which intersect the surface, are shown to originate from loops of interstitial character emitted along the <110> directions and are usually located at hundreds of angstroms away from the indentation point. Simulations reproduce the nucleation and glide of these dislocation loops.