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Multiple Weyl fermions in the noncentrosymmetric semimetal LaAlSi

文献类型：期刊论文

作者Su, Hao1,2,3; Shi, Xianbiao4,5,6; Yuan, Jian1; Wan, Yimin7,8; Cheng, Erjian7,8; Xi, Chuanying9; Pi, Li9; Wang, Xia1,10; Zou, Zhiqiang1,10; Yu, Na1,10
刊名PHYSICAL REVIEW B
出版日期2021-04-22
卷号103
ISSN号2469-9950
DOI10.1103/PhysRevB.103.165128
通讯作者Zhao, Weiwei(wzhao@hit.edu.cn)
英文摘要The noncentrosymmetric RA1Pn (R = rare earth, Pn = Si, Ge) family, predicted to host nonmagnetic and magnetic Weyl states, provides an excellent platform for investigating the relation between magnetism and Weyl physics. By using high-field magnetotransport measurements and first principles calculations, we have unveiled herein both type-I and type-II Weyl states in the nonmagnetic LaAlSi. By a careful comparison between experimental results and theoretical calculations, nontrivial Berry phases associated with Shubnikov-de Haas oscillations are ascribed to the electron Fermi pockets related to both types of Weyl points located similar to 0.1 eV above and exactly on the Fermi level, respectively. Under high magnetic field, signatures of Zeeman splitting are also observed. These results indicate that, in addition to the importance for exploring intriguing physics of multiple Weyl fermions, LaAlSi as a comparison with magnetic Weyl semimetals in the RA1Pn family would also yield valuable insights into the correlation between magnetism and Weyl physics.
WOS关键词TOTAL-ENERGY CALCULATIONS ; MAGNETORESISTANCE ; DISCOVERY ; SCHEMES ; STATES
资助项目National Natural Science Foundation of China[92065201] ; National Natural Science Foundation of China[11874264] ; starting grant of ShanghaiTech University ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA18000000] ; Shenzhen Peacock Team Plan[KQTD20170809110344233] ; Bureau of Industry and Information Technology of Shenzhen through the Graphene Manufacturing Innovation Center[201901161514] ; Analytical Instrumentation Center, SPST, ShanghaiTech University[SPST-AIC10112914]
WOS研究方向Materials Science ; Physics
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000647172600002
资助机构National Natural Science Foundation of China ; starting grant of ShanghaiTech University ; Strategic Priority Research Program of Chinese Academy of Sciences ; Shenzhen Peacock Team Plan ; Bureau of Industry and Information Technology of Shenzhen through the Graphene Manufacturing Innovation Center ; Analytical Instrumentation Center, SPST, ShanghaiTech University
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/122179]  
专题中国科学院合肥物质科学研究院
通讯作者Zhao, Weiwei
作者单位1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Harbin Inst Technol, State Key Lab Adv Welding, Shenzhen 518055, Peoples R China
5.Harbin Inst Technol, Joining & Flexible Printed Elect Technol Ctr, Shenzhen 518055, Peoples R China
6.Harbin Inst Technol, Minist Educ, Key Lab Microsyst & Microstruct Mfg, Harbin 150001, Peoples R China
7.Fudan Univ, State Key Lab Surface Phys, Dept Phys, Shanghai 200438, Peoples R China
8.Fudan Univ, Lab Adv Mat, Shanghai 200438, Peoples R China
9.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230031, Peoples R China
10.ShanghaiTech Univ, Analyt Instrumentat Ctr, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
推荐引用方式
GB/T 7714		 Su, Hao,Shi, Xianbiao,Yuan, Jian,et al. Multiple Weyl fermions in the noncentrosymmetric semimetal LaAlSi[J]. PHYSICAL REVIEW B,2021,103.
APA Su, Hao.,Shi, Xianbiao.,Yuan, Jian.,Wan, Yimin.,Cheng, Erjian.,...&Guo, Yanfeng.(2021).Multiple Weyl fermions in the noncentrosymmetric semimetal LaAlSi.PHYSICAL REVIEW B,103.
MLA Su, Hao,et al."Multiple Weyl fermions in the noncentrosymmetric semimetal LaAlSi".PHYSICAL REVIEW B 103(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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