Competition between Kardar–Parisi–Zhang and Berezinskii–Kosterlitz–Thouless kinetic roughening on (001) singular surface during steady crystal growth

N Akutsu, Y Kangawa - Scientific Reports, 2024 - nature.com
Kinetic roughening of the (001) singular surface during steady crystal growth is studied on
the basis of a lattice model using the Monte Carlo method. At a sufficiently low temperature …

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 …

Height of a faceted macrostep for sticky steps in a step-faceting zone

N Akutsu - Physical Review Materials, 2018 - APS
The driving force dependence of the surface velocity and the average height of faceted
merged steps, the terrace-surface slope, and the elementary step velocity are studied using …

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 …

Crossover from BKT-rough to KPZ-rough surfaces for interface-limited crystal growth/recession

N Akutsu - Scientific Reports, 2020 - nature.com
The crossover from a Berezinskii–Kosterlitz–Thouless (BKT) rough surface to a Kardar–
Parisi–Zhang (KPZ) rough surface on a vicinal surface is studied using the Monte Carlo …

Disassembly of faceted macrosteps in the step droplet zone in non-equilibrium steady state

N Akutsu - Crystals, 2017 - mdpi.com
A Wulff figure—the polar graph of the surface tension of a crystal—with a discontinuity was
calculated by applying the density matrix renormalization group method to the p-RSOS …

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 …

Energy Scaling and Asymptotic Properties of One-Dimensional Discrete System with Generalized Lennard-Jones (mn) Interaction

T Luo, Y Xiang, NK Yip - Journal of Nonlinear Science, 2021 - Springer
It is well known that elastic effects can cause surface instability. In this paper, we analyze a
one-dimensional discrete system which can reveal pattern formation mechanism resembling …

Bunch width versus macrostep height: A quantitative study of the effects of step-step repulsion

H Popova, F Krzyżewski, M Załuska-Kotur… - arXiv preprint arXiv …, 2020 - arxiv.org
Bunching of steps at the surface of growing crystals can be induced by both directions of the
driving force: step up and step down. The processes happen in different adatom …