Effect of evaporation on step bunching induced by impurities
Effect of evaporation on step bunching induced by impurities
复制标题
蒸发对杂质引起的阶梯聚束的影响
DOI：
10.1103/physreve.97.062801
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发表时间：
2018
影响因子：
2.4
通讯作者：
Sato Masahide
中科院分区：
文献类型：
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作者：
Sato Masahide
本文研究了吸附原子和杂质的蒸发对杂质引起的阶跃聚束的影响。在保持杂质与原子碰撞率之比不变的情况下，进行了蒙特卡罗模拟。在有杂质蒸发的体系中，邻面生长速率与。这个关系式与没有杂质蒸发时的关系式相同。当应力值较小时，邻近工作面不稳定。与没有杂质蒸发的系统相比，杂质的影响减弱。在我们的模拟中，步骤配对发生，但没有形成大束。当我们考虑杂质和吸附原子的蒸发时，当大于平衡时，邻面增大，value.is不成比例，当小时，形成大的聚束。本文还讨论了表面杂质浓度和固体中杂质浓度与台阶聚束形成的关系。
In this paper, we study the effect of the evaporation of adatoms and impurities on the step bunching induced by impurity. Keeping the ratio of the impingement rate of impuritiesto that of atomsconstant, we carry out Monte Carlo simulation. In the system with the evaporation of impurities, the growth rate of vicinal faceis proportional to. This relation is the same as that without the evaporation of impurities. Whenis small, the vicinal face is unstable. Compared with the system without the evaporation of impurities, the effect of impurities is weakened. In our simulation, step pairing occurs but large bunches are not formed. When we take account of the evaporation of both impurities and adatoms, the vicinal face grows whenis larger than the equilibrium value.is not proportional toand large bunches are formed whenis small. In this paper, we also show how the impurity density on surfaceand that incorporated in solidare related to the formation of step bunches.