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Synthesis and Characterization of a Pure 2D Antimony Film on Au(111)
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2021-04-21 , DOI: 10.1021/acs.jpcc.1c01104 Esteban D. Cantero 1, 2, 3 , Emanuel A. Martínez 2 , Laura N. Serkovic-Loli 2, 3 , Javier D. Fuhr 3, 4 , Oscar Grizzi 1, 2, 3 , Esteban A. Sánchez 1, 2, 3
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2021-04-21 , DOI: 10.1021/acs.jpcc.1c01104 Esteban D. Cantero 1, 2, 3 , Emanuel A. Martínez 2 , Laura N. Serkovic-Loli 2, 3 , Javier D. Fuhr 3, 4 , Oscar Grizzi 1, 2, 3 , Esteban A. Sánchez 1, 2, 3
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The synthesis of antimonene and related 2D Sb films on top of metallic substrates has recently become a very active subject due to the strong spin–orbit coupling and the envisaged topological properties of this novel material. Gold has been used as a standard substrate for other 2D films, but in the case of Sb, no success has yet been reported mainly due to the formation of AuSb2 surface alloy. In this work, we have used low energy electron diffraction, time-of-flight direct recoil spectroscopy, X-ray photoemission spectroscopy, and scanning tunneling microscopy together with density functional theory calculations to provide a full characterization of the growth and the structural properties of Sb deposited on Au(111). We show that the controlled deposition of Sb on Au(111) at room temperature results in a surface alloy at submonolayer coverage, but around 1 ML a pure 2D Sb film with a 
commensurate structure is achieved. The obtained 2D material has high stability and can be produced not only by direct deposition of Sb over the clean Au substrate but also by starting from a thicker Sb film followed by annealing of the sample at about 500 K, which is easier and reliable for potential applications.
中文翻译：
Au（111）上纯二维锑膜的合成与表征
由于强的自旋-轨道耦合和这种新型材料的预期拓扑特性，在金属基质顶部合成锑和相关的2D Sb薄膜最近已成为一个非常活跃的课题。金已被用作其他2D膜的标准基材，但就Sb而言，尚未成功报道，主要是由于形成了AuSb 2表面合金。在这项工作中，我们使用了低能电子衍射，飞行时间直接反冲光谱，X射线光发射光谱，扫描隧道显微镜以及密度泛函理论计算，以全面表征生长和结构特性。 Sb沉积在Au（111）上。我们表明，在室温下，Sb在Au（111）上的受控沉积会导致亚单层覆盖的表面合金，但是在大约1 ML的情况下，可以获得具有相称结构的纯2D Sb膜。所获得的2D材料具有很高的稳定性，不仅可以通过将Sb直接沉积在干净的Au基板上来生产，还可以通过从较厚的Sb膜开始，然后在约500 K的温度下对样品进行退火来生产，这对于电势而言更容易且可靠。应用程序。
更新日期：2021-05-06
commensurate structure is achieved. The obtained 2D material has high stability and can be produced not only by direct deposition of Sb over the clean Au substrate but also by starting from a thicker Sb film followed by annealing of the sample at about 500 K, which is easier and reliable for potential applications.
中文翻译：
Au（111）上纯二维锑膜的合成与表征
由于强的自旋-轨道耦合和这种新型材料的预期拓扑特性，在金属基质顶部合成锑和相关的2D Sb薄膜最近已成为一个非常活跃的课题。金已被用作其他2D膜的标准基材，但就Sb而言，尚未成功报道，主要是由于形成了AuSb 2表面合金。在这项工作中，我们使用了低能电子衍射，飞行时间直接反冲光谱，X射线光发射光谱，扫描隧道显微镜以及密度泛函理论计算，以全面表征生长和结构特性。 Sb沉积在Au（111）上。我们表明，在室温下，Sb在Au（111）上的受控沉积会导致亚单层覆盖的表面合金，但是在大约1 ML的情况下，可以获得具有
相称结构的纯2D Sb膜。所获得的2D材料具有很高的稳定性，不仅可以通过将Sb直接沉积在干净的Au基板上来生产，还可以通过从较厚的Sb膜开始，然后在约500 K的温度下对样品进行退火来生产，这对于电势而言更容易且可靠。应用程序。
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