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

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.

Keywords

dislocations, heteroepitaxial films, phase field crystals

DOI

10.1088/1742-6596/100/7/072043

Citation

Jalkanen , J , Trushin , O , Elder , K , Granato , E , Ying , S-C & Ala-Nissila , T 2008 , ' Two approaches to dislocation nucleation in the supported heteroepitaxial equilibrium islanding phenomenon ' , Journal of Physics: Conference Series , vol. 100 , no. 7 , 072043 , pp. 1-4 . https://doi.org/10.1088/1742-6596/100/7/072043

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-201710136973

Collections

[article-cris] Perustieteiden korkeakoulu / SCI

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