Multiple Weyl fermions in the noncentrosymmetric semimetal LaAlSi

doi:10.1103/PhysRevB.103.165128

	Multiple Weyl fermions in the noncentrosymmetric semimetal LaAlSi
	Su, Hao 2,3,4; Shi, Xianbiao 5,6,7; Yuan, Jian 2; Wan, Yimin 8,9; Cheng, Erjian 8,9; Xi, Chuanying 10; Pi, Li 10; Wang, Xia 1,2; Zou, Zhiqiang 1,2; Yu, Na 1,2
刊名	PHYSICAL REVIEW B
	2021-04-22
卷号	103
ISSN号	2469-9950
DOI	10.1103/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.
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关键词	TOTAL-ENERGY CALCULATIONS ; MAGNETORESISTANCE ; DISCOVERY ; SCHEMES ; STATES
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
内容类型	期刊论文
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, Analyt Instrumentat Ctr, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Harbin Inst Technol, State Key Lab Adv Welding, Shenzhen 518055, Peoples R China 6.Harbin Inst Technol, Joining & Flexible Printed Elect Technol Ctr, Shenzhen 518055, Peoples R China 7.Harbin Inst Technol, Minist Educ, Key Lab Microsyst & Microstruct Mfg, Harbin 150001, Peoples R China 8.Fudan Univ, State Key Lab Surface Phys, Dept Phys, Shanghai 200438, Peoples R China 9.Fudan Univ, Lab Adv Mat, Shanghai 200438, Peoples R China 10.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230031, 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).