Contactless Microwave Detection of Shubnikov–De Haas Oscillations in Three-Dimensional Dirac Semimetal ZrTe5

论文摘要

We report Shubnikov–de Haas（SdH）oscillations of a three-dimensional（3D） Dirac semimetal candidate of layered material ZrTe5 single crystals through contactless electron spin resonance（ESR）measurements with the magnetic field up to 1.4 T.The ESR signals manifest remarkably anisotropic characteristics with respect to the direction of the magnetic field,indicating an anisotropic Fermi surface in ZrTe5.Further experiments demonstrate that the ZrTe5 single crystals have the signature of massless Dirac fermions with nontrivialBerry phase,key evidence for 3D Dirac/Weyl fermions.Moreover,the onset of quantum oscillation of our ZrTe5 crystals revealed by the ESR can be derived down to 0.2 T,much smaller than the onset of SdH oscillation determined by conventional magnetoresistance measurements.Therefore,ESR measurement is a powerful tool to study the topologically nontrivial electronic structure in Dirac/Weyl semimetals and other topological materials with low bulk carrier density.

论文目录

文章来源

类型: 期刊论文

作者: 武敏,张红伟,朱相德,陆建伟,郑国林,高文帅,韩玉岩,周建辉,宁伟,田明亮

来源: Chinese Physics Letters 2019年06期

年度: 2019

分类: 基础科学,工程科技Ⅰ辑

专业: 材料科学

单位: Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Sciences,Department of Physics, University of Science and Technology of China,Department of Physics, Shaanxi University of Science and Technology,School of Science, RMIT University,Department of Physics, School of Physics and Materials Science, Anhui University

基金: Supported by the National Key Research and Development Program of China under Grant No 2016YFA0401003,the National Natural Science Foundation of China under Grant Nos 11774353,11574320,11374302,11804340,U1432251,U1732274,the Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology under Grant No 2018CXFX002,the China Postdoctoral Science Foundation under Grant No 2018M630718

分类号: TB30

页码: 55-58

总页数: 4

文件大小: 1089K

下载量: 22

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