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| Three-component fermions with surface Fermi arcs in tungsten carbide | |
| Ma, JZ; He, JB; Xu, YF; Lv, BQ; Chen, D; Zhu, WL; Zhang, S; Kong, LY; Gao, X; Rong, LY; Huang, YB; Richard, P; Xi, CY; Choi, ES; Shao, Y; Wang, YL; Gao, HJ; Dai, X; Fang, C; Weng, HM; Chen, GF; Qian, T; Ding, H | |
| 2018 | |
| Source Publication | NATURE PHYSICS
 |
| ISSN | 1745-2473 |
| Volume | 14Issue:4Pages:349-+ |
| Subtype | 期刊论文 |
| Abstract | Topological Dirac and Weyl semimetals not only host quasiparticles analogous to the elementary fermionic particles in high-energy physics, but also have a non-trivial band topology manifested by gapless surface states, which induce exotic surface Fermi arcs(1,2). Recent advances suggest new types of topological semimetal, in which spatial symmetries protect gapless electronic excitations without high-energy analogues(3-11). Here, using angle-resolved photoemission spectroscopy, we observe triply degenerate nodal points near the Fermi level of tungsten carbide with space group P (6) over barm 2 (no. 187), in which the low-energy quasiparticles are described as three-component fermions distinct from Dirac and Weyl fermions. We further observe topological surface states, whose constant-energy contours constitute pairs of 'Fermi arcs' connecting to the surface projections of the triply degenerate nodal points, proving the non-trivial topology of the newly identified semimetal state. |
| Keyword | Total-energy Calculations Wave Basis-set Dirac Semimetals Weyl States Taas |
| DOI | 10.1038/s41567-017-0021-8 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000429434100013 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/29190 |
| Collection | 中科院上海应用物理研究所2011-2019年 |
| Affiliation | 1.Ma, JZ 2.He, JB 3.Xu, YF 4.Lv, BQ 5.Chen, D 6.Zhu, WL 7.Zhang, S 8.Kong, LY 9.Gao, X 10.Rong, LY 11.Huang, YB 12.Richard, P 13.Xi, CY 14.Choi, ES 15.Shao, Y 16.Wang, YL 17.Gao, HJ 18.Dai, X 19.Fang, C 20.Weng, HM 21.Chen, GF 22.Qian, T 23.Ding, H |
| Recommended Citation GB/T 7714 | Ma, JZ,He, JB,Xu, YF,et al. Three-component fermions with surface Fermi arcs in tungsten carbide[J]. NATURE PHYSICS,2018,14(4):349-+. |
| APA | Ma, JZ.,He, JB.,Xu, YF.,Lv, BQ.,Chen, D.,...&Ding, H.(2018).Three-component fermions with surface Fermi arcs in tungsten carbide.NATURE PHYSICS,14(4),349-+. |
| MLA | Ma, JZ,et al."Three-component fermions with surface Fermi arcs in tungsten carbide".NATURE PHYSICS 14.4(2018):349-+. |
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| Three-component ferm（2759KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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