Dislocation energetics in epitaxial strained islands

Spencer, B. J.; Spencer, B.J.; Tersoff, J.
October 2000
Applied Physics Letters;10/16/2000, Vol. 77 Issue 16
Academic Journal
We calculate (to first order in the Burgers vector) the energy of introducing dislocations into Stranski-Krastanow islands having equilibrium shape. These results suggest that misfit dislocations of different Burgers vector tend to segregate spatially within the islands, which may be a source of mosaic structure in films formed by island coalescence. © 2000 American Institute of Physics.


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