Shape Transition and Dislocation Nucleation in Strained Epitaxial Islands
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Física
2006
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| _version_ | 1876476057715998720 |
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| author | J. Jalkanen |
| author_facet | J. Jalkanen |
| contents | Shape Transition and Dislocation Nucleation in Strained Epitaxial Islands J. Jalkanen O. Trushin E. Granato S.C. Ying T. Ala-Nissila Física, Astronomía y Matemáticas Atomistic model Dislocation nucleation Strained epitaxial islands We study numerically the equilibrium shape, shape transition and dislocation nucleation in strained epitaxialislands with a two-dimensional atomistic model, using interatomic potentials of Lennard-Jones type. The phasediagram for the equilibrium island shapes as a function of island size and lattice misfit with the substrate isobtained by an energy minimization procedure which does not require predefined faceted shapes. We determinethe energy barrier and transition path for transition between different shapes of the islands and for dislocationnucleation in initially coherent islands using a method introduced recently, based on a systematic search of thetransition paths for activated events. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436325 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.36 |
| format | Artículo científico |
| id | redalyc_46436325 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Shape Transition and Dislocation Nucleation in Strained Epitaxial Islands J. Jalkanen Física, Astronomía y Matemáticas Atomistic model Dislocation nucleation Strained epitaxial islands Shape Transition and Dislocation Nucleation in Strained Epitaxial Islands J. Jalkanen O. Trushin E. Granato S.C. Ying T. Ala-Nissila Física, Astronomía y Matemáticas Atomistic model Dislocation nucleation Strained epitaxial islands We study numerically the equilibrium shape, shape transition and dislocation nucleation in strained epitaxialislands with a two-dimensional atomistic model, using interatomic potentials of Lennard-Jones type. The phasediagram for the equilibrium island shapes as a function of island size and lattice misfit with the substrate isobtained by an energy minimization procedure which does not require predefined faceted shapes. We determinethe energy barrier and transition path for transition between different shapes of the islands and for dislocationnucleation in initially coherent islands using a method introduced recently, based on a systematic search of thetransition paths for activated events. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436325 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.36 |
| title | Shape Transition and Dislocation Nucleation in Strained Epitaxial Islands |
| topic | Física, Astronomía y Matemáticas Atomistic model Dislocation nucleation Strained epitaxial islands |
| url | https://www.redalyc.org/articulo.oa?id=46436325 |