In-situ topotactic chemical reaction for spectroscopies

IF 2.9 Q3 CHEMISTRY, PHYSICAL Electronic Structure Pub Date : 2024-07-01 DOI:10.1088/2516-1075/ad5acb
Tappei Kawakami, Kosuke Nakayama, Katsuaki Sugawara and Takafumi Sato
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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 and scanning tunneling microscopy 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.
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用于光谱分析的原位拓扑化学反应
拓扑化学反应(TCR)是一种将一种晶体相转变为另一种晶体相,同时保持一种或多种原始结构框架的化学过程,通常由晶体中原子的局部插入、移除或置换引起。在原子层材料和块状晶体表面利用 TCR 可以产生奇异的量子相,拓扑相的控制、二维(2D)超导的出现以及二维铁磁性的实现就是其中的突出表现。先进的表面敏感光谱学,如角度分辨光发射光谱和扫描隧道显微镜,是可视化此类奇异态电子结构的领先技术,并为我们进一步实现材料的功能化特性提供了指导。在这篇综述文章中,我们总结了这一领域的最新进展,并特别强调了在薄膜中结合光谱学和 TCR 所获得的有趣结果。
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来源期刊
CiteScore
3.70
自引率
11.50%
发文量
46
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