Experimental observation of multiple topological nodal structure in LaSb2

扫码查看

原文链接

万方数据

外文摘要：Unconventional fermions in the immensely studied topological semimetals are the source for rich exotic topological properties.Here,using symmetry analysis and first-principles calculations,we propose the coexistence of multiple topological nodal struc-ture in LaSb2,including topological nodal surfaces,nodal lines and in particular eightfold degenerate nodal points,which have been scarcely observed in a single material.Further,utilizing angle-resolved photoemission spectroscopy,we confirm the exis-tence of nodal surfaces and eightfold degenerate nodal points in LaSb2.The intriguing multiple topological nodal structure might play a crucial role in giving rise to the large linear magnetoresistance.Our work renews the insights into the exotic topological phenomena in LaSb2.

外文关键词：

eightfold degenerate pointsmultiple topological nodal structureangle-resolved photoemission spectroscopylinear unsaturated magnetoresistance

作者：

Yuxi Qiao、Fuyi Wang、Huaiqiang Wang、Zicheng Tao、Zhicheng Jiang、Zhengtai Liu、Soohyun Cho、Fayuan Zhang、Qingkai Meng、Wei Xia、Yichen Yang、Zhe Huang、Jishan Liu、Zhonghao Liu、Zengwei Zhu、Shan Qiao、Yanfeng Guo、Haijun Zhang、Dawei Shen

展开 >

作者单位：

State Key Laboratory of Functional Materials for Informatics,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China

National Synchrotron Radiation Laboratory,and School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,China

National Laboratory of Solid State Microstructures,School of Physics,Nanjing University,Nanjing 210093,China

School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China

School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China

Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China

Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China

Wuhan National High Magnetic Field Center and School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China

ShanghaiTech Laboratory for Topological Physics,ShanghaiTech University,Shanghai 201210,China

Institute of High-Pressure Physics & School of Physical Science and Technology,Ningbo University,Ningbo 315211,China

Collaborative Innovation Center of Advanced Microstructures,Nanjing University Nanjing 210093,China

Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

展开 >

基金：

国家重点研发计划国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金上海市自然科学基金上海市自然科学基金上海市自然科学基金Shanghai Science and Technology Innovation Action PlanOpen Projects from State Key Laboratory of Functional Materials for InformaticsDouble First-Class Initiative Fund of Shanghai Tech Universityfund of Science and Technology on Surface Physics and Chemistry Laboratorythis research used Beamline 03U of the Shanghai Synchrotron Radiation FacilityME2 Project from the National Natural Science Foundation of ChinaNational Key Projects for Research and Development of China中央高校基本科研业务费专项江苏省自然科学基金霍英东教育基金

项目编号：

2023YFA1406304U2032208122224131187426412074181118340061210421723ZR148220022ZR147330014ZR144760021JC1402000SKL20226142A02200102112279022021YFA1400400020414380185BK20200007161006

出版年：

2024

DOI：

10.1007/s11433-023-2320-7

中国科学:物理学力学天文学(英文版)

中国科学院

中国科学:物理学力学天文学(英文版)

CSTPCD

影响因子：0.91

ISSN：1674-7348

年,卷(期)：2024.67(4)

参考文献量62

Experimental observation of multiple topological nodal structure in LaSb2

中国科学:物理学 力学 天文学(英文版)

中国科学:物理学力学天文学(英文版)