Step bunches, nanowires and other vicinal “Creatures”—Ehrlich–Schwoebel effect by cellular automata

M Załuska-Kotur, H Popova, V Tonchev - Crystals, 2021 - mdpi.com
Different patterns can be created on the surface of growing crystals, among which the step
bunches and/or step meanders are two of the most studied. The Ehrlich–Schwoebel effect at …

Step bunching with both directions of the current: Vicinal W (110) surfaces versus atomistic-scale model

O Toktarbaiuly, V Usov, C Ó Coileáin, K Siewierska… - Physical Review B, 2018 - APS
We report the observation of bunching of monoatomic steps on vicinal W (110) surfaces
induced by step-up or step-down currents across the steps. Measurements reveal that the …

Analyzing the Pattern Formation on Vicinal Surfaces in Diffusion-Limited and Kinetics-Limited Growth Regimes: The Effect of Step–Step Exclusion

H Popova - Crystal Growth & Design, 2023 - ACS Publications
The effect of step–step exclusion on growing vicinal surfaces destabilized by a step-up (SU)
or step-down (SD) driving force is extensively studied in diffusion-limited (DL) and kinetics …

Electrodeposition of Ni–Cu alloys at high current densities: details of the elements distribution

D Goranova, R Rashkov, G Avdeev… - Journal of Materials …, 2016 - Springer
We report results from an experimental and modeling study of the far-from-equilibrium
electrodeposition of Ni–Cu alloys by changing systematically the current density with focus …

Scaling and dynamic stability of model vicinal surfaces

F Krzyżewski, M Załuska-Kotur, A Krasteva… - Crystal Growth & …, 2018 - ACS Publications
We propose an integrated modeling approach to the fundamental problem of vicinal crystal
surfaces destabilized by step-down (SD) and step-up (SU) currents with focus on both the …

Diffusion-Dependent Pattern Formation on Crystal Surfaces

MA Chabowska, MA Załuska-Kotur - ACS omega, 2023 - ACS Publications
The growth of a crystal is usually determined by its surface. Many factors influence the
growth dynamics. Energy barriers associated with the presence of steps most often decide …

Step bunching and macrostep formation in 1D atomistic scale model of unstable vicinal crystal growth

F Krzyżewski, M Załuska-Kotur, A Krasteva… - Journal of Crystal …, 2017 - Elsevier
We devise a new 1D atomistic scale model of vicinal growth based on Cellular Automaton.
In it the step motion is realized by executing the automaton rule prescribing how adatoms …

Quantifying the Effect of Step–Step Exclusion on Dynamically Unstable Vicinal Surfaces: Step Bunching without Macrostep Formation

H Popova, F Krzyżewski… - Crystal Growth & …, 2020 - ACS Publications
The bunching of steps at the surface of growing and sublimating crystals can be induced by
both directions of the electromigration force acting on the adatoms, step-up and step-down …

Surface Patterns Shaped by Additives in Crystals

MA Chabowska, MA Załuska-Kotur - arXiv preprint arXiv:2409.04084, 2024 - arxiv.org
One technique for creating semiconductor crystals with new, desired properties involves
replacing some atoms in the crystal lattice with additives-atoms of a different type. This …

Step meandering: The balance between the potential well and the Ehrlich-Schwoebel barrier

MA Chabowska, H Popova… - arXiv preprint arXiv …, 2024 - arxiv.org
This study presents a comprehensive and innovative exploration of how the surface
potential energy landscape influences meander formation. Using the Vicinal Cellular …