Magnetic states and Kondo screening in Weyl semimetals with chiral anomaly

作     者：Lin Li Jin-Hua Sun Zhen-Hua Wang Dong-Hui Xu Hong-Gang Luo Wei-Qiang Chen 

作者机构：College of Physics and Electronic Engineering and Center for Computational Sciences Sichuan Normal University Chengdu 610068 China Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and Technology Shenzhen 518055 China Department of Physics Ningbo University Ningbo 315211 China Beijing Computational Science Research Center Beijing 100084 China Department of Physics Hubei University Wuhan 430062 China Center of Interdisciplinary Studies and Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education Lanzhou University Lanzhou 730000 China 

出 版 物：《Physical Review B》 (Phys. Rev. B)

年 卷 期：2018年第98卷第7期

页      面：075110-075110页

核心收录：

基　　金：Education Department of Hubei Province PCSIRT, (IRT-16R35) National Natural Science Foundation of China, NSFC, (11547110, 11604138, 11604166, 11674139, 11674151, 11704106) National Basic Research Program of China (973 Program), (2016YFA0300300) 

主　　题：Kondo effect Magnetic susceptibility Topological phases of matter 

摘      要：We theoretically study the localized magnetic states and the Kondo screening of a magnetic impurity in the bulk of Weyl semimetals (SMs). The linear dispersion near the Weyl nodes and the anomalous broadening of the impurity level lead to a nonvanishing magnetic moment in a wide region of parameters. The magnetic susceptibility is significantly enhanced by increasing the chirality imbalance for the chemical potential fixed at the Weyl nodes. The Kondo effect takes place whenever the chemical potential is tuned away from the nodes. The low-temperature susceptibility is determined by both the Kondo screening and the broadening of the magnetic impurity level. In the presence of chiral anomaly, the Kondo screening displays opposite behaviors for the chemical potential situated below and above the Weyl nodes. The magnetic susceptibility can be tuned by the charge imbalance of the nodes, which provides a scheme to study the chiral anomaly in Weyl SMs.