Two-dimensional (2D) materials are playing more and more important roles in both basic sciences and industrial applications. For 2D materials, strain could tune the properties and enlarge applications. Since the growth of 2D materials on substrates is often accompanied by strain, the interaction between 2D materials and substrates is worthy of careful attention. Here we demonstrate the fabrication of strained monolayer silver arsenide (AgAs) on Ag(111) by molecular beam epitaxy, which shows one-dimensional stripe structures arising from uniaxial strain. The atomic geometric structure and electronic band structure are investigated by low energy electron diffraction, scanning tunneling microscopy, x-ray photoelectron spectroscopy, angle-resolved photoemission spectroscopy and first-principle calculations. Monolayer AgAs synthesized on Ag(111) provides a platform to study the physical properties of strained 2D materials.

中文翻译：

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Ag（111）衬底上应变单层砷化银的实验合成

二维（2D）材料在基础科学和工业应用中都扮演着越来越重要的角色。对于2D材料，应变可以调整属性并扩大应用范围。由于2D材料在基板上的生长通常伴随着应变，因此2D材料与基板之间的相互作用值得仔细注意。在这里，我们演示了通过分子束外延在Ag（111）上制备应变单层砷化银（AgAs），该结构显示了由单轴应变引起的一维条纹结构。通过低能电子衍射，扫描隧道显微镜，X射线光电子能谱，角分辨光发射能谱和第一性原理计算研究了原子的几何结构和电子能带结构。