Two approaches to dislocation nucleation in the supported heteroepitaxial equilibrium islanding phenomenon

Jari Jalkanen, Oleg Trushin, Ken Elder, Enzo Granato, See-Chen Ying, Tapio Ala-Nissila

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Abstract

We study the dislocation formation in 2D nanoscopic islands with two methods the Molecular Static method and the Phase Field Crystal method. It is found that both methods indicate the same qualitative stages of the nucleation process. The dislocations nucleate at the film-substrate contact point and the energy decreases monotonously when the dislocations are farther away from the island-wetting film contact points than the distance of the highest energy barrier.
Original languageEnglish
Article number072043
Pages (from-to)1-4
JournalJournal of Physics: Conference Series
Volume100
Issue number7
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Keywords

  • dislocations
  • heteroepitaxial films
  • phase field crystals

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