南方科技大学知识苑(SUSTech KC): Charge instability of topological Fermi arcs in chiral crystal CoSi

题名	Charge instability of topological Fermi arcs in chiral crystal CoSi
作者	Rao, Zhicheng 1,2,3; Hu, Quanxin 1,3; Tian, Shangjie 4,5; Qu, Qing2 ; Chen, Congrun2 ; Gao, Shunye 1,3; Yuan, Zhenyu 1,3; Tang, Cenyao 1,3; Fan, Wenhui 1,3; Huang, Jierui 1,3; Huang, Yaobo 6; Wang, Li 7; Zhang, Lu 1,3; Li, Fangsen 7; Wang, Kedong2 ; Yang, Huaixin 1,3,8; Weng, Hongming 1,3,8; Qian, Tian 1,3,8; Xu, Jinpeng 1,3,9; Jiang, Kun 1,3; Lei, Hechang 5; Sun, Yu-Jie1,2 ; Ding, Hong 1,8,9
通讯作者	Xu, Jinpeng
发表日期	2023-01-30
DOI	10.1016/j.scib.2023.01.001
发表期刊	Science Bulletin 影响因子和分区
ISSN	2095-9273
EISSN	2095-9281
卷号	68 期号:2页码:165-172
摘要	Topological boundary states emerged at the spatial boundary between topological non-trivial and trivial phases, are usually gapless, or commonly referred as metallic states. For example, the surface state of a topological insulator is a gapless Dirac state. These metallic topological boundary states are typically well described by non-interacting fermions. However, the behavior of topological boundary states with significant electron–electron interactions, which could turn the gapless boundary states into gapped ordered states, e.g., density wave states or superconducting states, is of great interest theoretically, but is still lacking evidence experimentally. Here, we report the observation of incommensurable charge density wave (CDW) formed on the topological boundary states driven by the electron–electron interactions on the (0 0 1) surface of CoSi. The wavevector of CDW varies as the temperature changes, which coincides with the evolution of topological surface Fermi arcs with temperature. The orientation of the CDW phase is determined by the chirality of the Fermi arcs, which indicates a direct association between CDW and Fermi arcs. Our finding will stimulate the search of more interactions-driven ordered states, such as superconductivity and magnetism, on the boundaries of topological materials. © 2023 Science China Press
关键词	Topological boundary states Fermi arcs Charge density wave Many -body effect Chiral crystal
相关链接	[来源记录]
收录类别	EI ; SCI
语种	英语
学校署名	其他
资助项目	We thank Lu Yu, Chen Fang, Tiantian Zhang and Liqing Zhou for valuable discussions. We thank the technical support from Nano-X from Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (SINANO). This work was supported by the National Natural Science Foundation of China ( U1832202 , 11888101 , 11920101005 , 12141402 , and 12274459 ), the Chinese Academy of Sciences ( QYZDB-SSW-SLH043 , XDB33020100 , and XDB28000000 ), the Beijing Municipal Science and Technology Commission ( Z171100002017018 , and Z200005 ), the National Key R&D Program of China ( 2018YFE0202600, 2022YFA1403100, and 2022YFA1403800 ), the Fundamental Research Funds for the Central Universities and Research Funds of Renmin University of China (RUC) ( 18XNLG14 , 19XNLG13 , 19XNLG17 , and 20XNH062 ), the Synergic Extreme Condition User Facility, Beijing, China, and Beijing National Laboratory for Condensed Matter Physics.We thank Lu Yu, Chen Fang, Tiantian Zhang, and Liqing Zhou for valuable discussions. We thank the technical support from Nano-X from Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (SINANO). This work was supported by the National Natural Science Foundation of China (U1832202, 11888101, 11920101005, 12141402, and 12274459), the Chinese Academy of Sciences (QYZDB-SSW-SLH043, XDB33020100, and XDB28000000), the Beijing Municipal Science and Technology Commission (Z171100002017018, and Z200005), the National Key R&D Program of China (2018YFE0202600, 2022YFA1403100, and 2022YFA1403800), the Fundamental Research Funds for the Central Universities and Research Funds of Renmin University of China (RUC) (18XNLG14, 19XNLG13, 19XNLG17, and 20XNH062), the Synergic Extreme Condition User Facility, Beijing, China, and Beijing National Laboratory for Condensed Matter Physics. Zhicheng Rao, Quanxin Hu, Jinpeng Xu, and Yu-Jie Sun designed STM measurements; Quanxin Hu, Zhicheng Rao, Jinpeng Xu, and Congrun Chen performed STM measurements with assistance of Zhenyu Yuan, Renjie Zhang, Li Wang, and Fangsen Li; Zhicheng Rao performed ARPES measurements with assistance of Shunye Gao, Quanxin Hu, Jierui Huang, Wenhui Fan, and Yaobo Huang; Zhicheng Rao, Quanxin Hu, Congrun Chen, and Qing Qu processed sample surface with assistance from Jierui Huang and Cenyao Tang; Li Wang and Huaixin Yang performed TEM measurements; Shangjie Tian and Hechang Lei synthesized single crystals; Zhicheng Rao and Quanxin Hu analysed experimental data; Zhicheng Rao and Yu-Jie Sun plotted figures with assistance from Kun Jiang and Tian Qian; Zhicheng Rao, Qing Qu, Yu-Jie Sun, Kun Jiang, and Hong Ding wrote the manuscript with contributions from all authors; Yu-Jie Sun, Kedong Wang, and Hong Ding supervised the project.
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000945908000001
出版者	Elsevier B.V.
EI入藏号	20230313404289
EI主题词	Association reactions ; Charge density ; Crystals ; Electrons ; Topological insulators ; Topology
EI分类号	Electricity: Basic Concepts and Phenomena:701.1 ; Chemical Reactions:802.2 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Crystalline Solids:933.1
来源库	EV Compendex
引用统计	被引频次[WOS]：4
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/519726
专题	理学院_物理系
作者单位	1.Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing; 100190, China 2.Department of Physics, Southern University of Science and Technology, Shenzhen; 518055, China 3.School of Physical Sciences, University of Chinese Academy of Sciences, Beijing; 100049, China 4.School of Materials Science and Engineering, Anhui University, Hefei; 230601, China 5.Laboratory for Neutron Scattering, and Beijing Key Laboratory of Optoelectronic Functional Materials MicroNano Devices, Department of Physics, Renmin University of China, Beijing; 100872, China 6.Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai; 201204, China 7.Vacuum Interconnected Nanotech Workstation (Nano-X), Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou; 215123, China 8.Songshan Lake Materials Laboratory, Dongguan; 523808, China 9.CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing; 100190, China
第一作者单位	物理系
推荐引用方式 GB/T 7714	Rao, Zhicheng,Hu, Quanxin,Tian, Shangjie,et al. Charge instability of topological Fermi arcs in chiral crystal CoSi[J]. Science Bulletin,2023,68(2):165-172.
APA	Rao, Zhicheng.,Hu, Quanxin.,Tian, Shangjie.,Qu, Qing.,Chen, Congrun.,...&Ding, Hong.(2023).Charge instability of topological Fermi arcs in chiral crystal CoSi.Science Bulletin,68(2),165-172.
MLA	Rao, Zhicheng,et al."Charge instability of topological Fermi arcs in chiral crystal CoSi".Science Bulletin 68.2(2023):165-172.