Title: In-situ topotactic chemical reaction for spectroscopies Show Chinese title

Title: 原位拓位化学反应用于光谱学

Abstract: Topotactic chemical reaction (TCR) is a chemical process that transforms one crystalline phase to another while maintaining one or more of the original structural frameworks, typically induced by the local insertion, removal, or replacement of atoms in a crystal. The utilization of TCR in atomic-layer materials and surfaces of bulk crystals leads to exotic quantum phases, as highlighted by the control of topological phases, the emergence of two-dimensional (2D) superconductivity, and the realization of 2D ferromagnetism. Advanced surface-sensitive spectroscopies such as angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy (STM) are leading techniques to visualize the electronic structure of such exotic states and provide us a guide to further functionalize material properties. In this review article, we summarize the recent progress in this field, with particular emphasis on intriguing results obtained by combining spectroscopies and TCR in thin films. Show Chinese abstract

Abstract: 拓扑定向化学反应（TCR）是一种化学过程，它在保持原始结构框架之一或多个的情况下，将一种晶体相转化为另一种晶体相，通常由晶体中原子的局部插入、移除或替换引起。 在原子层材料和体晶体表面中利用TCR会导致奇异的量子相，正如对拓扑相的控制、二维（2D）超导性的出现以及二维铁磁性的实现所强调的那样。 先进的表面敏感光谱技术，如角度分辨光电子能谱（ARPES）和扫描隧道显微镜（STM），是可视化这些奇异状态电子结构的主要技术，并为我们进一步功能化材料特性提供了指导。 在本文综述中，我们总结了该领域的最新进展，特别强调了通过将光谱学与TCR结合在薄膜中获得的引人注目的结果。