Cu（001）表面六角FeN条纹的谐波网格模拟
Harmonic mesh modelling of hexagonal FeN stripes on Cu(001)
摘要：
最近用扫描隧道显微镜（STM）观察到，在Cu（001）表面上的Hispanic FeN单层膜呈现由暗条纹和亮条纹组成的条纹图案。在这里，谐波网格模型提出了解释这些结果。它使用具有两个不同波矢的平面傅里叶分析来计算由晶格失配应力引起的Fe原子的微小位移。位移Fe原子三角形的面积被用作N原子在其中心的突起的量度。波矢量的适当选择允许可视化（Sqrt（3）x Sqrt（3））有序氮原子的主要突起。所选择的波矢量与Fe配置有关，使晶格失配应力最小化。该模型保持简单，因此仅涵盖STM实验的最基本特征。该模型的局限性进行了讨论，并提出了扩展的方式。
英文摘要：
Hexagonal FeN monolayers on Cu(001) show a stripe pattern composed of dark and bright stripes as observed recently by scanning tunneling microscopy (STM). Here a harmonic mesh model is proposed to interpret those results. It uses a planar Fourier analysis with two different wave vectors to calculate small displacements of Fe atoms caused by lattice mismatch stress. The area of displaced Fe atom triangles is used as a measure for the protrusion of N atoms in their center. Proper selection of the wave vectors allows to visualize the dominant protrusions of (Sqrt(3) x Sqrt(3)) ordered nitrogen atoms. The wave vectors selected are related to Fe configurations which minimize lattice mismatch stress. The model is kept simple, so just the most basic features of the STM experiments are covered. The limits of the model are discussed and ways for extending it are proposed.
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。
