Interaction of dislocations on crossed glide planes in a strained epitaxial layer

被引:63
作者
Schwarz, KW
机构
[1] IBM Watson Research Center, Yorktown Heights, NY, 10598
关键词
D O I
10.1103/PhysRevLett.78.4785
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
引用
收藏
页码:4785 / 4788
页数:4
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