台阶上的扩散边界条件
Diffusion Boundary Condition at Surface Steps
摘要:
这篇通讯报告了一个几何因子,它在跨越表面台阶的扩散边界条件中是必要的。具体来说,这个因素与吸附原子浓度的空间梯度在一个表面步骤,它描述了跨越步骤的跳跃尝试的分数。在这篇文章中,作者使用理论公式证明了该因子为1/1,并使用三角形,正方形和六边形表面晶格的数值模拟进一步验证了该公式。
英文摘要:
This Communication reports a geometrical factor that is necessary in the diffusion boundary condition across surface steps. Specifically, this factor relates adatom concentration to its spatial gradient at a surface step, and it describes the fraction of jump attempts that cross the step. In this Communication, the authors show that the factor is 1/Πusing theoretical formulation and further verify the formulation using numerical simulations for triangular, square, and hexagonal surface lattices.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。