Synergic effect of electronic correlation and spin-orbit coupling is an emerging topic in topological materials. Central to this rapidly developing area are the prototypes of strongly correlated heavy-fermion systems. Recently, some Ce-based compounds are proposed to host intriguing topological nature, among which the electronic properties of CeSb are still under debate. In this paper, we report a comprehensive study combining magnetic and electronic transport measurements, and electronic band structure calculations of this compound to identify its topological nature. Quantum oscillations are clearly observed in both magnetization and magnetoresistance at high fields, from which one pocket with a nontrivial Berry phase is recognized. Angular-dependent magnetoresistance shows that this pocket is elongated in nature and corresponds to the electron pocket as observed in LaBi. Nontrivial electronic structure of CeSb is further confirmed by first-principle calculations, which arises from spin splitting in the fully polarized ferromagnetic state. These features indicate that magnetic-field can induce nontrivial topological electronic states in this prototypical Kondo semimetal.
Discovery of an Antiferromagnetic Topological Nodal-line Kondo Semimetal
Beijing Normal University（北京师范大学）；Zhejiang University（浙江大学）；Donostia International Physics Center (DIPC)（多诺斯蒂亚国际物理中心）；University of Oxford（牛津大学）；Diamond Light Source（钻石光源）；Institute of Physics, Chinese Academy of Sciences（中国科学院物理研究所）；Nanjing University（南京大学）；ShanghaiTech University（上海科技大学）；Tsinghua University（清华大学）；MAX IV Laboratory, Lund University（隆德大学MAX IV实验室）；Stanford Synchrotron Radiation Light Source, SLAC National Accelerator Laboratory（斯坦福同步辐射光源，SLAC国家加速器实验室）；Swiss Light Source, Paul Scherrer Institute（瑞士光源，保罗谢尔研究所）；Tokyo Institute of Technology（东京工业大学）；Princeton University（普林斯顿大学）
Transducing quantum-spin-ice correlations into Weyl Fermi-arc transport at a synthetic Kondo lattice interface
Rutgers University（罗格斯大学）；University of California, Berkeley（加州大学伯克利分校）；Rice University（莱斯大学）；National High Magnetic Field Laboratory（国家高磁场实验室）；Tsinghua University（清华大学）
Dirac semimetal strontium iridate thin films with strong spin-orbit interaction for magnetic heterostructures
Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences（俄罗斯科学院科捷利尼科夫无线电工程与电子研究所）；National Research University "Higher School of Economics", Faculty of Physics（国立研究大学高等经济大学物理系）；Moscow Institute of Physics and Technology (National Research University)（莫斯科物理技术学院（国立研究大学））
Layer-dependent antiferromagnetic Chern and axion insulating states in UOTe
Howard University（霍华德大学）；S. N. Bose National Centre for Basic Sciences（S.N. Bose基础科学国家中心）；Harvard University（哈佛大学）；Washington University in St. Louis（圣路易斯华盛顿大学）；The University of Texas at Austin（德克萨斯大学奥斯汀分校）；University of Michigan（密歇根大学）；Northeastern University（东北大学）
