Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb
文献类型：期刊论文
| 作者 | Ma, JZ; Yi, CJ; Lv, BQ; Wang, ZJ; Nie, SM; Wang, L; Kong, LY; Huang, YB; Richard, P; Zhang, P |
| 刊名 | SCIENCE ADVANCES
 |
| 出版日期 | 2017 |
| 卷号 | 3期号:5页码:- |
| 关键词 | Semimetal |
| ISSN号 | 2375-2548 |
| DOI | 10.1126/sciadv.1602415 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Topological insulators (TIs) host novel states of quantum matter characterized by nontrivial conducting boundary states connecting valence and conduction bulk bands. All TIs discovered experimentally so far rely on either time-reversal or mirror crystal symmorphic symmetry to protect massless Dirac-like boundary states. Several materials were recently proposed to be TIs with nonsymmorphic symmetry, where a glide mirror protects exotic surface fermions with hourglass-shaped dispersion. However, an experimental confirmation of this new fermion is missing. Using angle-resolved photoemission spectroscopy, we provide experimental evidence of hourglass fermions on the (010) surface of crystalline KHgSb, whereas the (001) surface has no boundary state, in agreement with first-principles calculations. Our study will stimulate further research activities of topological properties of nonsymmorphic materials. |
| WOS关键词 | SEMIMETAL |
| 语种 | 英语 |
| WOS记录号 | WOS:000401955300019 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28649]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Ma, JZ,Yi, CJ,Lv, BQ,et al. Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb[J]. SCIENCE ADVANCES,2017,3(5):-. |
| APA | Ma, JZ.,Yi, CJ.,Lv, BQ.,Wang, ZJ.,Nie, SM.,...&Ding, H.(2017).Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb.SCIENCE ADVANCES,3(5),-. |
| MLA | Ma, JZ,et al."Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb".SCIENCE ADVANCES 3.5(2017):-. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。