Chiral fermion reversal in chiral crystals
文献类型：期刊论文
| 作者 | Li, H; Xu, S; Rao, ZC; Zhou, LQ; Wang, ZJ; Zhou, SM; Tian, SJ; Gao, SY; Li, JJ; Huang, YB |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2019 |
| 卷号 | 10页码:- |
| 关键词 | TOPOLOGICAL DIRAC SEMIMETAL DISCOVERY ARCS |
| ISSN号 | 2041-1723 |
| DOI | 10.1038/s41467-019-13435-4 |
| 文献子类 | 期刊论文 |
| 英文摘要 | In materials chiral fermions such as Weyl fermions are characterized by nonzero chiral charges, which are singular points of Berry curvature in momentum space. Recently, new types of chiral fermions beyond Weyl fermions have been discovered in structurally chiral crystals CoSi, RhSi and PtAI. Here, we have synthesized RhSn single crystals, which have opposite structural chirality to the CoSi crystals we previously studied. Using angle-resolved photoemission spectroscopy, we show that the bulk electronic structures of RhSn are consistent with the band calculations and observe evident surface Fermi arcs and helical surface bands, confirming the existence of chiral fermions in RhSn. It is noteworthy that the helical surface bands of the RhSn and CoSi crystals have opposite handedness, meaning that the chiral fermions are reversed in the crystals of opposite structural chirality. Our discovery establishes a direct connection between chiral fermions in momentum space and chiral lattices in real space. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31996]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China; 2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100049, Peoples R China; 4.Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China; 5.Renmin Univ China, Beijing Key Lab Optoelect Funct Mat & Micronano D, Beijing 100872, Peoples R China; 6.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China; 7.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China; 8.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, H,Xu, S,Rao, ZC,et al. Chiral fermion reversal in chiral crystals[J]. NATURE COMMUNICATIONS,2019,10:-. |
| APA | Li, H.,Xu, S.,Rao, ZC.,Zhou, LQ.,Wang, ZJ.,...&Ding, H.(2019).Chiral fermion reversal in chiral crystals.NATURE COMMUNICATIONS,10,-. |
| MLA | Li, H,et al."Chiral fermion reversal in chiral crystals".NATURE COMMUNICATIONS 10(2019):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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