Topological phase transition in a magnetic Weyl semimetal

doi:10.1103/PhysRevB.104.205140

	Topological phase transition in a magnetic Weyl semimetal
	Liu, D. F.1,2; Xu, Q. N.3; Liu, E. K.4,5; Shen, J. L.4; Le, C. C.3; Li, Y. W.6; Pei, D.6; Liang, A. J.2,7 ; Dudin, P.8; Kim, T. K.8; Cacho, C.8; Xu, Y. F.1; Sun, Y.3; Yang, L. X.9,10; Liu, Z. K.2,7 ; Felser, C.3,11,12; Parkin, S. S. P.1; Chen, Y. L.2,6,9
	2021-11-29
发表期刊	PHYSICAL REVIEW B (IF:3.2[JCR-2023],3.3[5-Year])
ISSN	2469-9950
EISSN	2469-9969
卷号	104 期号:20
发表状态	已发表
DOI	10.1103/PhysRevB.104.205140
摘要	Topological Weyl semimetals (TWSs) are exotic crystals possessing emergent relativistic Weyl fermions connected by unique surface Fermi arcs (SFAs) in their electronic structures. To realize the TWS state, certain symmetries (such as the inversion or time reversal symmetry) must be broken, leading to a topological phase transition (TPT). Despite the great importance in understanding the formation of TWSs and their unusual properties, direct observation of such a TPT has been challenging. Here, using a recently discovered magnetic TWS Co3Sn2S2, we were able to systematically study its TPT with detailed temperature dependence of the electronic structures by angle-resolved photoemission spectroscopy. The TPT with drastic band structure evolution was clearly observed across the Curie temperature (T-C = 177K), including the disappearance of the characteristic SFAs and the recombination of the spin-split bands that leads to the annihilation of Weyl points with opposite chirality. These results not only reveal important insights on the interplay between the magnetism and band topology in TWSs, but also provide a method to control their exotic physical properties.
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收录类别	SCI ; EI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China[52088101,11974394] ; National Key R&D Program of China["2019YFA0704904","2017YFA0305400"] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB33000000] ; Shanghai Technology Innovation Action Plan 2020-Integrated Circuit Technology Support Program[20DZ1100605] ; International Postdoctoral Exchange Fellowship Program (Talent-Introduction Program)[YJ20200126] ; China Postdoctoral Science Foundation[2021M692131]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000724482000001
出版者	AMER PHYSICAL SOC
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/138716
专题	物质科学与技术学院_公共科研平台_拓扑物理实验室物质科学与技术学院_PI研究组_柳仲楷组物质科学与技术学院_特聘教授组_陈宇林
通讯作者	Chen, Y. L.
作者单位	1.Max Planck Inst Microstruct Phys, D-06120 Halle, Germany 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 3.Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany 4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 5.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China 6.Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England 7.ShanghaiTech Lab Topol Phys, Shanghai 200031, Peoples R China 8.Diamond Light Source, Didcot OX110DE, Oxon, England 9.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 10.Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China 11.Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA 12.Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Liu, D. F.,Xu, Q. N.,Liu, E. K.,et al. Topological phase transition in a magnetic Weyl semimetal[J]. PHYSICAL REVIEW B,2021,104(20).
APA	Liu, D. F..,Xu, Q. N..,Liu, E. K..,Shen, J. L..,Le, C. C..,...&Chen, Y. L..(2021).Topological phase transition in a magnetic Weyl semimetal.PHYSICAL REVIEW B,104(20).
MLA	Liu, D. F.,et al."Topological phase transition in a magnetic Weyl semimetal".PHYSICAL REVIEW B 104.20(2021).