Symmetry-enforced topological phononic quadratic Dirac points, type-III nodal rings, and nodal surfaces in BaNa2
文献类型：期刊论文
| 作者 | Liu, Jiaxi1,2; Liu, Peitao2; Sun, Yan2; Chen, Xing-Qiu2; Li, Jiangxu2 |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2023-09-15 |
| 卷号 | 108期号:10页码:16 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.108.104312 |
| 通讯作者 | Chen, Xing-Qiu(xingqiu.chen@imr.ac.cn) |
| 英文摘要 | Topological gapless phonons have been extensively studied both in crystal symmetry and materials realization due to their spinless properties. Based on degeneracy and geometry, they can be categorized into the topological nodal point, line, and surface as well as other complex topological phonons. However, the coexistence of more than two types of topological phonons in a single material is rarely reported due to strict symmetry constraints. By means of symmetry analysis, k center dot p model, and first-principles calculations, we found that the quadratic Dirac point (QDP), type-III nodal ring (NR), and nodal surface (NS) can simultaneously emerge under the symmetry protection of space group P6(3)/mmc. We also predicted a series of candidate materials for experimental realizations. As a representative, we performed a thorough investigation of BaNa2 in the C14 Laves phase, analyzing its bulk phonon dispersion relationships, topological invariants, and topological surface states. We unveiled the underlying mechanism for the coexistence of QDPs, NRs, and NSs. This study not only highlights the significance of crystal symmetry in realizing novel topological phonons but also lays the foundation for the analysis of topological materials with hybrid topological characteristics. |
| 资助项目 | National Key R&D Program of China[2021YFB3501503] ; National Natural Science Foundation of China[51474202] ; Network and Information Foundation of CAS[CAS-WX2021SF-0102] ; Key project of Chinese Academy of Sciences[ZDRW-CN-2021-2-5] ; China Postdoctoral Science Foundation[2022T150660] ; China Postdoctoral Science Foundation[2021M700152] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001127441900002 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Network and Information Foundation of CAS ; Key project of Chinese Academy of Sciences ; China Postdoctoral Science Foundation |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chen, Xing-Qiu |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jiaxi,Liu, Peitao,Sun, Yan,et al. Symmetry-enforced topological phononic quadratic Dirac points, type-III nodal rings, and nodal surfaces in BaNa2[J]. PHYSICAL REVIEW B,2023,108(10):16. |
| APA | Liu, Jiaxi,Liu, Peitao,Sun, Yan,Chen, Xing-Qiu,&Li, Jiangxu.(2023).Symmetry-enforced topological phononic quadratic Dirac points, type-III nodal rings, and nodal surfaces in BaNa2.PHYSICAL REVIEW B,108(10),16. |
| MLA | Liu, Jiaxi,et al."Symmetry-enforced topological phononic quadratic Dirac points, type-III nodal rings, and nodal surfaces in BaNa2".PHYSICAL REVIEW B 108.10(2023):16. |
入库方式： OAI收割
来源：金属研究所
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。