Факультет електроніки та інформаційних технологій (ЕлІТ)
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Item Electromigration-induced formation of percolating adsorbate islands during condensation from the gaseous phase: a computational study(Beilstein-Institut, 2021) Дворниченко, Аліна Василівна; Дворниченко, Алина Васильевна; Dvornychenko, Alina Vasylivna; Kharchenko, V.O.; Kharchenko, D.O.We provide a computational study of a change in the morphology of a growing thin film during condensation caused by electromigration effects. It will be shown, that separated circular adsorbate islands, realized in an isotropic system, become elongated in the direction of the applied electrical field. We discuss the dependence of the critical value of the strength of the applied electrical field, responsible for the formation of percolating adsorbate islands, on main control parameters. This study provides insight into details of electromigration effects during the self-organization of adatoms into percolating adsorbate islands during condensation from the gaseous phase. We will show that the elongated morphology of adsorbate islands remains stable if the electric field is turned off.Item Electromigration Effects at Epitaxial Growth of Thin Films: Phase-Field Modeling(Department of Physics and Astronomy of the National Academy of Sciences of Ukraine, 2021) Дворниченко, Аліна Василівна; Дворниченко, Алина Васильевна; Dvornychenko, Alina Vasylivnahe epitaxial growth of thin films with regard for the anisotropy of the adsorbate surface dif-fusion induced by electromigration effects has been studied theoretically in the framework ofthe phase-field theory and with the use of numerical simulations. The influence of the coef-ficient of electromigration-induced anisotropic diffusion, which is proportional to the appliedelectric field strength, on the dynamics of growth of the film thickness and the height of sur-face structures, growing surface morphology, statistical characteristics of the surface multilayeradsorbate structures, and distribution of surface structures over their heights is revealed.