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

IF 1.2 Q3 PHYSICS, MULTIDISCIPLINARY Papers in Physics 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

引用次数: 0

Abstract

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

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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来源期刊

Papers in Physics PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.90

自引率

0.00%

发文量

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