Tunable topological Dirac surface states and van Hove singularities in kagome metal GdV6Sn6
文献类型：期刊论文
| 作者 | Hu, Yong; Wu, Xianxin2,3; Yang, Yongqi5; Gao, Shunye4,6; Plumb, Nicholas C.; Schnyder, Andreas P.; Xie, Weiwei4,5; Ma, Junzhang7,8,9; Shi, Ming |
| 刊名 | SCIENCE ADVANCES
 |
| 出版日期 | 2022 |
| 卷号 | 8期号:38页码:eadd2024 |
| ISSN号 | 2375-2548 |
| DOI | 10.1126/sciadv.add2024 |
| 英文摘要 | Transition-metal-based kagome materials at van Hove filling are a rich frontier for the investigation of novel topological electronic states and correlated phenomena. To date, in the idealized two-dimensional kagome lattice, topologically Dirac surface states (TDSSs) have not been unambiguously observed, and the manipulation of TDSSs and van Hove singularities (VHSs) remains largely unexplored. Here, we reveal TDSSs originating from a Z(2) bulk topology and identify multiple VHSs near the Fermi level (E-F) in magnetic kagome material GdV6Sn6. Using in situ surface potassium deposition, we successfully realize manipulation of the TDSSs and VHSs. The Dirac point of the TDSSs can be tuned from above to below E-F, which reverses the chirality of the spin texture at the Fermi surface. These results establish GdV6Sn6 as a fascinating platform for studying the nontrivial topology, magnetism, and correlation effects native to kagome lattices. They also suggest potential application of spintronic devices based on kagome materials. |
| 学科主题 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27898]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.City Univ Hong Kong, Hong Kong Inst Adv Study, Kowloon, Hong Kong, Peoples R China 2.Paul Scherrer Inst, Photon Sci Div, CH-5232 Villigen, Switzerland 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Max Planck Inst Festkorperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany 5.Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ 08854 USA 6.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 7.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 8.City Univ Hong Kong, Dept Phys, Kowloon, Hong Kong, Peoples R China 9.City Univ Hong Kong, Shenzhen Res Inst, Shenzhen, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Yong,Wu, Xianxin,Yang, Yongqi,et al. Tunable topological Dirac surface states and van Hove singularities in kagome metal GdV6Sn6[J]. SCIENCE ADVANCES,2022,8(38):eadd2024. |
| APA | Hu, Yong.,Wu, Xianxin.,Yang, Yongqi.,Gao, Shunye.,Plumb, Nicholas C..,...&Shi, Ming.(2022).Tunable topological Dirac surface states and van Hove singularities in kagome metal GdV6Sn6.SCIENCE ADVANCES,8(38),eadd2024. |
| MLA | Hu, Yong,et al."Tunable topological Dirac surface states and van Hove singularities in kagome metal GdV6Sn6".SCIENCE ADVANCES 8.38(2022):eadd2024. |
入库方式： OAI收割
来源：理论物理研究所
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