Tunable ferromagnetic Weyl fermions from a hybrid nodal ring

作     者：Baobing Zheng Bowen Xia Rui Wang Jinzhu Zhao Zhongjia Chen Yujun Zhao Hu Xu 

作者机构：Department of Physics and Shenzhen Key Laboratory of Quantum Science and EngineeringSouthern University of Science and Technology518055 ShenzhenP.R.China School of Physics and TechnologyWuhan University430072 WuhanP.R.China College of Physics and Optoelectronic Technology and Advanced Titanium Alloys and Functional Coatings Cooperative Innovation CenterBaoji University of Arts and Sciences721016 BaojiP.R.China Institute for Structure and Function and Department of physicsChongqing University400044 ChongqingP.R.China Department of PhysicsSouth China University of Technology510640 GuangzhouP.R.China Center for Quantum ComputingPeng Cheng Laboratory518055 ShenzhenP.R.China 

出 版 物：《npj Computational Materials》 (计算材料学（英文）)

年 卷 期：2019年第5卷第1期

页      面：516-522页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：This work is supported by the National Natural Science Foundation of China(NSFC,Grant Nos.11674148,11334003,and 11847301) the Guangdong Natural Science Funds for Distinguished Young Scholars(No.2017B030306008) the Fundamental Research Funds for the Central Universities(Nos.cqu2018CDHB1B01,2019CDXYWL0029,and 2019CDJDWL0005) the China Postdoctoral Science Foundation(No.2019M652686) the Natural Science Basic Research plan in Shaanxi Province of China(Grant No.2018JQ1083) the Scientific Research Program Funded by Shaanxi Provincial Education Department(Grant No.17JK0041) the Baoji University of Arts and Sciences Key Research(Grant No.:ZK2017009) the Science,Technology,and Innovation Commission of Shenzhen Municipality(No.ZDSYS20170303165926217) 

主　　题：ferromagnetic nodal topological 

摘      要：Realization of nontrivial band topology in condensed matter systems is of great interest in recent *** first-principles calculations and symmetry analysis,we propose an exotic topological phase with tunable ferromagnetic Weyl fermions in a halfmetallic oxide CrP_(2)O_(7).In the absence of spin–orbit coupling(SOC),we reveal that CrP_(2)O_(7) possesses a hybrid nodal *** SOC is present,the spin-rotation symmetry is *** a result,the hybrid nodal ring shrinks to discrete nodal points and forms different types of Weyl *** Fermi arcs projected on the(100)surface are clearly visible,which can contribute to the experimental study for the topological properties of CrP_(2)O_(7).In addition,the calculated quasiparticle interference patterns are also highly desirable for the experimental study of CrP_(2)O_(7).Our findings provide a good candidate of ferromagnetic Weyl semimetals,and are expected to realize related topological applications with their attracted features.