%0 Journal Article
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%@resumeid 8JMKD3MGP5W/3C9JH2J
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%3 Shape transition and dislocation.pdf
%@dissemination WEBSCI; PORTALCAPES; SCIELO.
%D 2006
%2 sid.inpe.br/mtc-m16@80/2006/07.28.18.30.48
%4 sid.inpe.br/mtc-m16@80/2006/07.28.18.30
%X We study numerically the equilibrium shape, shape transition and dislocation nucleation in strained epitaxial islands with a two-dimensional atomistic model, using interatomic potentials of Lennard-Jones type. The phase diagram for the equilibrium island shapes as a function of island size and lattice misfit with the substrate is obtained by an energy minimization procedure which does not require predefined faceted shapes. We determine the energy barrier and transition path for transition between different shapes of the islands and for dislocation nucleation in initially coherent islands using a method introduced recently, based on a systematic search of the transition paths for activated events.
%8 June
%N 2
%T Shape transition and dislocation nucleation in strained epitaxial islands
%@secondarytype PRE PN
%K Strained epitaxial islands, Dislocation nucleation, Atomistic model.
%@group
%@group
%@group LAS-INPE-MCT-BR
%@secondarykey INPE-13912--PRE/9093
%@copyholder SID/SCD
%@issn 0103-9733
%@affiliation Laboratory of Physics, Helsinki University of Technology,
%@affiliation Institute of Microelectronics and Informatics, Academy of Sciences of Russia,
%@affiliation Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Sensores e Materiais,
%@affiliation Department of Physics, Brown University,
%@affiliation Department of Physics, Brown University,
%B Brazilian Journal of Physics
%P 328-331
%V 36
%A Jalkanen, J.,
%A Trushin, O.,
%A Granato, Enzo,
%A Ying, S. C.,
%A Ala-Nissila, T.,
%@area FISMAT