Type-III Weyl semimetals: (TaSe4)(2)I
文献类型：期刊论文
| 作者 | Li, Xiao-Ping4,5; Deng, Ke6,7; Fu, Botao1,4,5; Li, YongKai4,5; Ma, Da-Shuai4,5; Han, JunFeng4,5; Zhou, Jianhui2; Zhou, Shuyun3,6,7; Yao, Yugui4,5 |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2021-02-10 |
| 卷号 | 103 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.103.L081402 |
| 通讯作者 | Zhou, Jianhui(jhzhou@hmfl.ac.cn) |
| 英文摘要 | Weyl semimetals have been classified into type I and type II with respect to the geometry of their Fermi surfaces at the Weyl points. we propose another class of Weyl semimetal, whose unique Fermi surface contains two electron or two hole pockets touching at a multi-Weyl point, dubbed a type-III Weyl semimetal. Based on first-principles calculations, we first show that the quasi-one-dimensional compound (TaSe4)(2)I is a type-III Weyl semimetal with larger chiral charges. (TaSe4)(2)I can support fourfold helicoidal surface states with long Fermi arcs on the (001) surface. Angle-resolved photoemission spectroscopy measurements are in agreement with the gapless nature of (TaSe4)(2)I at room temperature and reveal its characteristic dispersion. In addition, our calculations show that external strain could induce transitions in (TaSe4)(2)I among the type-III, type-II, and type-I Weyl semimetals, accompanied with the Lifshitz transitions of the Fermi surfaces. Therefore, our work experimentally indicates (TaSe4)(2)I as a type-III Weyl semimetal and provides a promising platform to further investigate the physics of type-III Weyl fermions. |
| 资助项目 | National Key R&D Program of China[2016YFA0300600] ; National Natural Science Foundation of China[11725418] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB30000000] ; High Magnetic Field Laboratory of Anhui Province |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000617039900004 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; High Magnetic Field Laboratory of Anhui Province |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/120152]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhou, Jianhui |
| 作者单位 | 1.Sichuan Normal Univ, Coll Phys & Elect Engn, Ctr Computat Sci, Chengdu 610068, Peoples R China 2.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China 3.Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China 4.Beijing Inst Technol, Key Lab Adv Optoelect Quantum Architecture & Meas, Beijing Key Lab Nanophoton & Ultrafine Optoelect, Beijing 100081, Peoples R China 5.Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China 6.Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 7.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiao-Ping,Deng, Ke,Fu, Botao,et al. Type-III Weyl semimetals: (TaSe4)(2)I[J]. PHYSICAL REVIEW B,2021,103. |
| APA | Li, Xiao-Ping.,Deng, Ke.,Fu, Botao.,Li, YongKai.,Ma, Da-Shuai.,...&Yao, Yugui.(2021).Type-III Weyl semimetals: (TaSe4)(2)I.PHYSICAL REVIEW B,103. |
| MLA | Li, Xiao-Ping,et al."Type-III Weyl semimetals: (TaSe4)(2)I".PHYSICAL REVIEW B 103(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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