Atomistic configurations and energetics of crack extension in silicon.
نویسندگان
چکیده
We report the first atomistic determination of the minimum energy path for a series of bond ruptures to advance a crack front. Saddle-point configurations on (111) cleavage planes in Si reveal a steplike distribution of atomic displacements, implying a kink mechanism which is known to control dislocation mobility. Manifestations of lattice trapping and directional cleavage anisotropy are further elucidated.
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عنوان ژورنال:
- Physical review letters
دوره 93 20 شماره
صفحات -
تاریخ انتشار 2004