Symmetry-enforced topological phononic quadratic Dirac points, type-III nodal rings, and nodal surfaces in BaNa<sub>2</sub>

doi:10.1103/PhysRevB.108.104312

IMR OpenIR

	Symmetry-enforced topological phononic quadratic Dirac points, type-III nodal rings, and nodal surfaces in BaNa₂
	Liu, Jiaxi 1,2; Liu, Peitao 2; Sun, Yan 2; Chen, Xing-Qiu 2; Li, Jiangxu 2
通讯作者	Chen, Xing-Qiu(xingqiu.chen@imr.ac.cn)
	2023-09-15
发表期刊	PHYSICAL REVIEW B
ISSN	2469-9950
卷号	108 期号:10 页码:16
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.
资助者	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
DOI	10.1103/PhysRevB.108.104312
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001127441900002
出版者	AMER PHYSICAL SOC
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/183451
专题	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.