Journal of the Japanese Association for Crystal Growth
巻
47
号
1
ページ
02
発行年
2020-05-12
ISSN
0385-6275
NCID
AN00188386
出版者
日本結晶成長学会 = Japanese Association for Crystal Growth
抄録
We consider a vicinal face, where atoms and impurities impinge and evaporate to a vapor phase, to study how the surface diffusion and evaporation of impurities affect step bunching induced by impurities. When the lifetime of impurities on the vicinal face Ƭimp is long and the surface diffusion of impurities is neglected, the step bunches induced by impurities are tight. When Ƭimp decreases, the size of the step bunches, which means the number of steps in the bunches, decreases but the separation of single steps from bunches does not occur. When we take into account fast surface diffusion of impurities, the separation and collision between single steps and step bunches occur repeatedly.