Physics – Condensed Matter – Materials Science
Scientific paper
2002-01-30
Phys. Rev. Lett. 88, 036101 (2002)
Physics
Condensed Matter
Materials Science
10 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.88.036101
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.
de la Figuera Juan
González Miguel A.
Hamilton Jean-Christophe
la Fuente Oscar Rodríguez de
Pai Woei Wu
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