Interaction of Dislocations on Crossed Glide Planes in a Strained Epitaxial Layer
- 23 June 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 78 (25) , 4785-4788
- https://doi.org/10.1103/physrevlett.78.4785
Abstract
The full three-dimensional Peach-Koehler formalism is implemented numerically and used to investigate encounters between threading and misfit dislocations in a strained epitaxial layer. The possible outcomes of such interactions are found to include blocking, binding, repulsive passage, and attractive instabilities. We show that blocking is a weak effect, and that the peculiar substrate pileup structures previously attributed to a “modified Frank-Read mechanism” are actually a natural consequence of having sources operating on intersecting glide planes.Keywords
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