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

开发和构建新型自旋分辨飞行时间光谱仪，采用脉冲 11 eV 激光来分析拓扑绝缘体

• 批准号: 386472300
• 负责人: Dr. Erik Schaefer
• 金额: --
• 依托单位: Stanford University
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/386472300?language=en
• 关键词: Development; construction; novel; spin; resolving

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.

自从90年前提出自旋是电子的一个附加的本征性质以来，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，包括电子自旋在内的材料的电子性质可以被分析，以发现和理解令人兴奋的物理现象，或者为未来的电子应用寻找新的材料。尽管不断改进，有效的自旋测量仍然具有挑战性。由于缺乏测量效率，许多与自旋相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。该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高效自旋分辨光谱仪。计划利用该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。我们小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全吻合，注定要进行合作。此外，科学网络，知识和实验技能得到加强。最后，在国外的研究诱导良好的职业前景在科学。