Robust structure symmetry and electronic band structure of the chiral topological semimetal CoSi against high pressure

doi:10.1016/j.mtcomm.2022.103667

	Robust structure symmetry and electronic band structure of the chiral topological semimetal CoSi against high pressure
	Leiming, Chen 1,3; Hangqi, Liu 1; Chunrui, Zheng 4; Yanhong, Chen 5; Zhihui, Zhao 1; Fanghuang, Wei 1; Zhengniu, Pan 1; Yang, Xu 1; Boyu, Chen 1; Canli, Dai 6; Yan, Zhang 1; Yanfeng, Guo2
	2022-06
发表期刊	MATERIALS TODAY COMMUNICATIONS
ISSN	/
EISSN	2352-4928
卷号	31
发表状态	已发表
DOI	10.1016/j.mtcomm.2022.103667
摘要	The chiral crystal symmetry in the transition metal monosilicide CoSi plays a requisite role in protecting the multifold chiral fermion and its robustness to external pressures is very crucial for the applications of this important material. By performing high-pressure X-ray diffraction and electronic transport measurements, we reveal that the chiral structure of CoSi is robust against external pressure up to ~ 39 GPa. The ab initio calculations unveil that the external pressure negligibly influences the electric band structure in which the threefold degenerate spin-1 chiral fermion at the Γ point and the fourfold degenerate charge-2 Dirac node at the R point in the Brillouin zone could be well preserved. Through studying the high pressure effects on the unconventional topological semimetal CoSi, our results have unveiled robust multifold chiral fermions under the high pressure. © 2022 Elsevier Ltd
关键词	Band structure Calculations Cobalt compounds High pressure effects Silicon compounds Topology Transition metals Ab initio calculations Brillouin zones Chiral crystals Chiral structures Electronic band structure Electronic transport measurements External pressures High pressure Structure symmetry X- ray diffractions
收录类别	SCIE ; EI
语种	英语
出版者	Elsevier Ltd
EI入藏号	20222212173909
EI主题词	Crystal symmetry
EI分类号	531 Metallurgy and Metallography ; 921 Mathematics ; 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory ; 933 Solid State Physics ; 933.1.1 Crystal Lattice
原始文献类型	Journal article (JA)
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/187899
专题	物质科学与技术学院_PI研究组_郭艳峰组
通讯作者	Leiming, Chen
作者单位	1.School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou; 450046, China; 2.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China; 3.Henan Key Laboratory of Aeronautical Material and Application Technology, Zhengzhou University of Aeronautics, Zhengzhou; 450046, China; 4.Institute of Science and Technology Information of Henan Province, Zhengzhou; 450003, China; 5.Yongcheng City Vocational Education Center, Yongcheng; 476600, China; 6.Kaixue Cold Chain Logistics co., ltd, Zhengzhou; 451450, China
推荐引用方式 GB/T 7714	Leiming, Chen,Hangqi, Liu,Chunrui, Zheng,et al. Robust structure symmetry and electronic band structure of the chiral topological semimetal CoSi against high pressure[J]. MATERIALS TODAY COMMUNICATIONS,2022,31.
APA	Leiming, Chen.,Hangqi, Liu.,Chunrui, Zheng.,Yanhong, Chen.,Zhihui, Zhao.,...&Yanfeng, Guo.(2022).Robust structure symmetry and electronic band structure of the chiral topological semimetal CoSi against high pressure.MATERIALS TODAY COMMUNICATIONS,31.
MLA	Leiming, Chen,et al."Robust structure symmetry and electronic band structure of the chiral topological semimetal CoSi against high pressure".MATERIALS TODAY COMMUNICATIONS 31(2022).