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| Topological surface Fermi arcs in the magnetic Weyl semimetal Co3Sn2S2 | |
| 2018-06-11 | |
| Source Publication | PHYSICAL REVIEW B
 |
| ISSN | 2469-9950 |
| Volume | 97Issue:23 |
| Status | 已发表 |
| DOI | 10.1103/PhysRevB.97.235416 |
| Abstract | Very recently, the half-metallic compound Co3Sn2S2 was proposed to be a magnetic Weyl semimetal (WSM) with Weyl points only 60 meV above the Fermi level E-F. Owing to the low charge carrier density and large Berry curvature induced, Co3Sn2S2 possesses both a large anomalous Hall conductivity and a large anomalous Hall angle, which provide strong evidence for the existence of Weyl points in Co3Sn2S2. In this work, we theoretically study the surface topological feature of Co3Sn2S2 and its counterpart Co3Sn2Se2. By cleaving the sample at the weak Sn-S/Se bonds, one can achieve two different surfaces terminated with Sn and S/Se atoms, respectively. The resulting Fermi-arc-related states can range from the energy of the Weyl points to E-F - 0.1 eV in the Sn-terminated surface. Therefore, it should be possible to observe the Fermi arcs in angle-resolved photoemission spectroscopy (ARPES) measurements. Furthermore, in order to simulate quasiparticle interference in scanning tunneling microscopy (STM) measurements, we also calculate the joint density of states for both terminals. This work should be helpful for a comprehensive understanding of the topological properties of these two magnetic WSMs and further ARPES and STM measurements. |
| Indexed By | SCI ; SCIE ; EI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China from the National Science Fund for Excellent Young Scholars[51722106] |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:000434761900013 |
| Publisher | AMER PHYSICAL SOC |
| EI Accession Number | 20191906875564 |
| EI Keywords | Binary alloys ; Magnetism ; Photoelectron spectroscopy ; Scanning tunneling microscopy ; Topology |
| EI Classification Number | Magnetism: Basic Concepts and Phenomena:701.2 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 |
| WOS Keyword | INTERFERENCE ; SIGNATURES ; DISCOVERY ; SCHEMES ; MOTE2 ; PHASE ; BULK ; NBP |
| Original Document Type | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/23090 |
| Collection | 物质科学与技术学院_PI研究组_李刚组 硬x射线自由电子激光装置项目 |
| Corresponding Author | Sun, Yan |
| Affiliation | 1.Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany 2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China 4.Princeton Univ, Dept Chem, Princeton, NJ 08544 USA |
| Recommended Citation GB/T 7714 | Xu, Qiunan,Liu, Enke,Shi, Wujun,et al. Topological surface Fermi arcs in the magnetic Weyl semimetal Co3Sn2S2[J]. PHYSICAL REVIEW B,2018,97(23). |
| APA | Xu, Qiunan.,Liu, Enke.,Shi, Wujun.,Muechler, Lukas.,Gayles, Jacob.,...&Sun, Yan.(2018).Topological surface Fermi arcs in the magnetic Weyl semimetal Co3Sn2S2.PHYSICAL REVIEW B,97(23). |
| MLA | Xu, Qiunan,et al."Topological surface Fermi arcs in the magnetic Weyl semimetal Co3Sn2S2".PHYSICAL REVIEW B 97.23(2018). |
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