Single pair of charge-2 Dirac and charge-2Weyl phonons in GeO<sub>2</sub>

doi:10.1088/1674-1056/ad6a08

IMR OpenIR

	Single pair of charge-2 Dirac and charge-2Weyl phonons in GeO₂
	He, Dong-Chang 1,2; Liu, Jia-Xi 1,2; Liu, Pei-Tao 1; Li, Jiang-Xu 1; Chen, Xing-Qiu 1
通讯作者	Li, Jiang-Xu(jxli15s@imr.ac.cn) ; Chen, Xing-Qiu(xingqiu.chen@imr.ac.cn)
	2024-09-01
发表期刊	CHINESE PHYSICS B
ISSN	1674-1056
卷号	33 期号:10 页码:5
摘要	The presence of a pair of Weyl and Dirac points (WP-DP) in topological semimetal states is intriguing and sought after due to the effects associated with chiral topological charges. However, identifying these states in real materials poses a significant challenge. In this study, by means of first-principles calculations we predict the coexistence of charge-2 Dirac and charge-2 Weyl phonons at high-symmetry points within a noncentrosymmetric P4(1)2(1)2 space group. Furthermore, we propose GeO2 as an ideal candidate for realizing these states. Notably, we observe two distinct surface arcs that connect the Dirac and Weyl points across the entire Brillouin zone, which could facilitate their detection in future experimental investigations. This study not only presents a tangible material for experimentalists to explore the topological properties of WP-DP states but also opens up new avenues in the quest for ideal platforms to study chiral particles.
关键词	topological phonon Weyl points Dirac points
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	10.1088/1674-1056/ad6a08
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	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:001322414800001
出版者	IOP Publishing Ltd
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190307
专题	中国科学院金属研究所
通讯作者	Li, Jiang-Xu; Chen, Xing-Qiu
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	He, Dong-Chang,Liu, Jia-Xi,Liu, Pei-Tao,et al. Single pair of charge-2 Dirac and charge-2Weyl phonons in GeO₂[J]. CHINESE PHYSICS B,2024,33(10):5.
APA	He, Dong-Chang,Liu, Jia-Xi,Liu, Pei-Tao,Li, Jiang-Xu,&Chen, Xing-Qiu.(2024).Single pair of charge-2 Dirac and charge-2Weyl phonons in GeO₂.CHINESE PHYSICS B,33(10),5.
MLA	He, Dong-Chang,et al."Single pair of charge-2 Dirac and charge-2Weyl phonons in GeO₂".CHINESE PHYSICS B 33.10(2024):5.