Development and construction of a novel spin-resolving time-of-flight spectrometer with a pulsed 11 eV laser for the analysis of topological insulators

自九十年前提出自旋是电子的一种附加的固有性质以来，各种自旋分析和检测技术已经建立起来。在许多光谱测量技术中，可以分析材料的电子特性，包括电子自旋，以发现和理解令人兴奋的物理或为未来的电子应用找到新的材料。尽管不断改进，但有效的自旋测量仍然具有挑战性。由于测量效率的缺乏，许多与自旋有关的材料性质在很大程度上未被探索。为了进行有效的自旋分析，需要一种新型的测量技术。最近出现了高效的测量系统。这些技术允许快速测量，并为固态物理学的新见解铺平道路。本研究项目的目标是通过实施和结合各种新技术，建立和表征一种新型的高效自旋分辨光谱仪。计划用这台光谱仪分析目前研究的材料。预计在研究期间将与沈教授和Sobota博士密切合作。我们两组在知识上的互补，以及在科学兴趣和实验方法上的重叠，完美地结合在一起，注定要合作。此外，科学网络、知识和实验技能也得到了提高。最后，出国留学在科学方面有良好的职业前景。

Since the proposition of the spin as an additional intrinsic property of electrons ninety years ago, various spin analysis and detection techniques have been established. In many spectroscopic measurement techniques, electronic properties of materials including the electron spin can be analyzed to discover and understand exciting physics or find novel materials for future electronic applications.Despite continuous improvements, efficient spin measurements remain challenging. Due to the lack of measurement efficiency, many spin-related material properties are largely unexplored. For an effective spin analysis, a new type of measurement technique is needed. Recently, highly efficient measurement systems have emerged. These techniques allow rapid measurement and pave the way for new insights in solid state physics.The objective of the research project is the set-up and characterization of a novel highly efficient spin resolving spectrometer by implementing and combining various new techniques. With this spectrometer, it is planned to analyze materials that are subject of present research.It is envisaged to work closely with Prof. Shen and Dr. Sobota during the research stay. The given supplement in knowledge of our groups as well as the overlap in scientific interest and experimental methods fits perfectly together and is predestined for a cooperation. Furthermore, the scientific network, knowledge and experimental skills are enhanced. Finally, the studies abroad induce excellent career prospects in science.