用$^{77}$Se-NMR探测FeSe$_{0.88}$S$ $_{0.12}$的压力诱导Lifshitz跃迁

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2019-06-18 DOI:10.4279/PIP.110003

T. Kuwayama, K. Matsuura, Y. Mizukami, S. Kasahara, Y. Matsuda, T. Shibauchi, Y. Uwatoko, N. Fujiwara

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引用次数: 0

摘要

近年来，FeSe$_{1-x}$S$_x$系统因其独特的压力-温度相图而备受关注。我们对FeSe$_{0.88}$S$_{0.12}$的单晶进行了$^{77}$Se NMR测量，以研究其微观性质。在$1.0~\mathrm{GPa}$处，$^｛77｝$Se光谱的位移表现出异常增强，这表明费米表面的拓扑变化，即所谓的Lifshitz跃迁，发生在$1.0~ \mathrm｛GPa｝$处。磁涨落同时改变了其性质，这意味着主要嵌套矢量的变化。编辑：A.Goñi，A.Cantarero，J.S.Reparaz

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Pressure-induced Lifshitz transition in FeSe$_{0.88}$S$_{0.12}$ probed via $^{77}$Se-NMR

Recently, FeSe$_{1-x}$S$_x$ systems have received much attention because of the unique pressure-temperature phase diagram. We performed $^{77}$Se-NMR measurements on a single crystal of FeSe$_{0.88}$S$_{0.12}$ to investigate its microscopic properties. The shift of $^{77}$Se spectra exhibits anomalous enhancement at $1.0~\mathrm{GPa}$, suggesting a topological change in the Fermi surfaces, so-called Lifshitz transition, occurs at $1.0~\mathrm{GPa}$. The magnetic fluctuation simultaneously changes its properties, which implies a change in the dominant nesting vector. Edited by: A. Goñi, A. Cantarero, J. S. Reparaz

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.