Electronic and topological properties of kagome lattice LaV3Si2

作     者：Xue-Jiao Chen Bing-Wen Zhang Dong Han Zhi-Cheng Zhong 

作者机构：CAS Key Laboratory of Magnetic MaterialsDevices and Zhejiang Province Key Laboratory of Magnetic Materials and Application TechnologyNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Fujian Key Laboratory of Functional Marine Sensing MaterialsCenter for Advanced Marine Materials and Smart SensorsCollege of Material and Chemical EngineeringMinjiang UniversityFuzhou 350108China Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《钨科技(英文)》 (Tungsten)

年 卷 期：2023年第5卷第3期

页      面：317-324页

核心收录：

学科分类：08[工学] 0714[理学-统计学（可授理学、经济学学位）] 0803[工学-光学工程] 0701[理学-数学] 0702[理学-物理学] 

基　　金：financial support from the National Key R&D Program of China (Grant No. 2021YFA0718900) Key Research Program of Frontier Sciences of CAS (Grant No. ZDBS-LY-SLH008) the National Nature Science Foundation of China (Grant Nos. 11974365, No. 11974344, No. 52101225) K.C. Wong Education Foundation (GJTD-2020-11) the Science Center of the National Science Foundation of China (52088101) the Open Fund of the State Key Laboratory of Integrated Optoelectronics (Grant No. IOSKL2020KF07)。 

主　　题：Vanadium Kagome lattice Rare earth Electronic Dirac points 

摘      要：Topological kagome lattice at the frontier of fundamental physics plays a key role in non-trivial topological quantum state.Here,we predict and investigate kagome lattice rare-earth vanadium-based quantum material LaV3Si2using density functional theory calculations.Both phonon spectrum and crystal transformation show stability of this material,which may be grown by experimental method.Dirac fermions,flat bands,and van Hove points as some basic features are presented in band structure and surface states.Further,symmetry-based compatibility relations support enforced semi-metal for occupied electron numbers with strong Berry curvature.Our results suggest that rare-earth vanadium-based RV3Si2can be treated as a new family kagome lattice.