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| Giant anomalous Hall effect in a ferromagnetic kagome-lattice semimetal | |
Liu, Enke1,2; Sun, Yan1; Kumar, Nitesh1; Muechler, Lukas3; Sun, Aili1; Jiao, Lin1; Yang, Shuo-Ying4; Liu, Defa4; Liang, Aiji5,6  ; Xu, Qiunan1; Kroder, Johannes1; Suess, Vicky1; Borrmann, Horst1; Shekhar, Chandra1; Wang, Zhaosheng7; Xi, Chuanying7; Wang, Wenhong2; Schnelle, Walter1; Wirth, Steffen1; Chen, Yulin5,8; Goennenwein, Sebastian T. B.9; Felser, Claudia1
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| 2018-11 | |
| Source Publication | NATURE PHYSICS
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| ISSN | 1745-2473 |
| Volume | 14Issue:11Pages:1125-+ |
| Status | 已发表 |
| DOI | 10.1038/s41567-018-0234-5 |
| Abstract | Magnetic Weyl semimetals with broken time-reversal symmetry are expected to generate strong intrinsic anomalous Hall effects, due to their large Berry curvature. Here, we report a magnetic Weyl semimetal candidate, Co3Sn2S2, with a quasi-two-dimensional crystal structure consisting of stacked kagome lattices. This lattice provides an excellent platform for hosting exotic topological quantum states. We observe a negative magnetoresistance that is consistent with the chiral anomaly expected from the presence of Weyl fermions close to the Fermi level. The anomalous Hall conductivity is robust against both increased temperature and charge conductivity, which corroborates the intrinsic Berry-curvature mechanism in momentum space. Owing to the low carrier density in this material and the considerably enhanced Berry curvature from its band structure, the anomalous Hall conductivity and the anomalous Hall angle simultaneously reach 1,130 Omega(-1) cm(-1) and 20%, respectively, an order of magnitude larger than typical magnetic systems. Combining the kagome-lattice structure and the long-range out-of-plane ferromagnetic order of Co3Sn2S2, we expect that this material is an excellent candidate for observation of the quantum anomalous Hall state in the two-dimensional limit. |
| Indexed By | SCI ; SCIE ; EI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51722106] |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:000448973100019 |
| Publisher | NATURE PUBLISHING GROUP |
| EI Accession Number | 20190806529064 |
| WOS Keyword | ANTIPEROVSKITES ; FERMIONS ; STATE |
| Original Document Type | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/28293 |
| Collection | 物质科学与技术学院_特聘教授组_陈宇林 |
| Corresponding Author | Liu, Enke; Sun, Yan; Felser, Claudia |
| Affiliation | 1.Max Planck Inst Chem Phys Solids, Dresden, Germany 2.Chinese Acad Sci, Inst Phys, Beijing, Peoples R China 3.Princeton Univ, Dept Chem, Princeton, NJ 08544 USA 4.Max Planck Inst Microstruct Phys, Halle, Germany 5.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China 6.Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA 7.Chinese Acad Sci, High Field Magnet Lab, Hefei, Anhui, Peoples R China 8.Univ Oxford, Dept Phys, Clarendon Lab, Oxford, England 9.Tech Univ Dresden, Inst Festkorper & Mat Phys, Dresden, Germany |
| Recommended Citation GB/T 7714 | Liu, Enke,Sun, Yan,Kumar, Nitesh,et al. Giant anomalous Hall effect in a ferromagnetic kagome-lattice semimetal[J]. NATURE PHYSICS,2018,14(11):1125-+. |
| APA | Liu, Enke.,Sun, Yan.,Kumar, Nitesh.,Muechler, Lukas.,Sun, Aili.,...&Felser, Claudia.(2018).Giant anomalous Hall effect in a ferromagnetic kagome-lattice semimetal.NATURE PHYSICS,14(11),1125-+. |
| MLA | Liu, Enke,et al."Giant anomalous Hall effect in a ferromagnetic kagome-lattice semimetal".NATURE PHYSICS 14.11(2018):1125-+. |
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