Observation of floating surface state in obstructed atomic insulator candidate NiP<sub>2</sub>

doi:10.1038/s41535-024-00699-3

IMR OpenIR

	Observation of floating surface state in obstructed atomic insulator candidate NiP₂
	Liu, Xiang-Rui 1,2; Zhu, Ming-Yuan 1,2; Feng, Yuanwen 3,4; Zeng, Meng 1,2; Ma, Xiao-Ming 1,2,5,6; Hao, Yu-Jie 1,2; Dai, Yue 1,2; Luo, Rong-Hao 1,2; Zhu, Yu-Peng 1,2; Yamagami, Kohei 7; Liu, Yi 8; Cui, Shengtao 8; Sun, Zhe 8; Liu, Jia-Yu 9; Huang, Yu 9; Liu, Zhengtai 10; Ye, Mao 10; Shen, Dawei 8,11; Li, Bing 3,4; Liu, Chang 1,2
通讯作者	Li, Bing(bingli@imr.ac.cn) ; Liu, Chang(liuc@sustech.edu.cn)
	2024-11-02
发表期刊	NPJ QUANTUM MATERIALS
卷号	9 期号:1 页码:8
摘要	Obstructed atomic insulator is recently proposed as an unconventional material, in which electric charge centers localized at sites away from the atoms. A half-filling surface state would emerge at specific interfaces cutting through these charge centers and avoid intersecting any atoms. In this article, we utilized photoemission spectroscopy and density functional theory calculations to study one of the obstructed atomic insulator candidates, NiP2. A floating surface state with large effective mass that is close to the Fermi level and isolated from all bulk states is resolved on the (100) cleavage plane, implying better catalytic activity in this plane than the previously studied surfaces. Density functional theory calculation results elucidate that this floating surface state is originated from the obstructed Wannier charge centers, albeit underwent surface reconstruction. Our findings not only shed lights on the study of obstructed atomic insulators, but also provide possible route for development of new catalysts.
资助者	National Natural Science Foundation of China (National Science Foundation of China) ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; NSFC Guangdong ; Guangdong Innovative and Entrepreneurial Research Team Program ; NSFC ; Highlight Project ; College of Science, SUSTech
DOI	10.1038/s41535-024-00699-3
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (National Science Foundation of China)[2022YFA1403700] ; National Natural Science Foundation of China (National Science Foundation of China)[2021YFB3501201] ; National Natural Science Foundation of China (National Science Foundation of China)[2023YFA1406304] ; National Key R&D Program of China[11934007] ; National Key R&D Program of China[12074161] ; National Key R&D Program of China[12204221] ; National Natural Science Foundation of China (NSFC)[2016A030313650] ; National Natural Science Foundation of China (NSFC)[2020KCXTD001] ; National Natural Science Foundation of China (NSFC)[2022A1515012283] ; NSFC Guangdong[2016ZT06D348] ; NSFC Guangdong[11227902] ; Guangdong Innovative and Entrepreneurial Research Team Program[U2032208] ; NSFC[PHYS-HL-2020-1] ; Highlight Project ; College of Science, SUSTech
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Quantum Science & Technology ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001346186300001
出版者	NATURE PORTFOLIO
引用统计	被引频次：2[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/321006/191120
专题	中国科学院金属研究所
通讯作者	Li, Bing; Liu, Chang
作者单位	1.Southern Univ Sci & Technol SUSTech, Dept Phys, Shenzhen, Guangdong, Peoples R China 2.Southern Univ Sci & Technol SUSTech, Shenzhen Inst Quantum Sci & Engn SIQSE, Shenzhen, Guangdong, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Liaoning, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Liaoning, Peoples R China 5.Hefei Natl Lab, Int Quantum Acad, Shenzhen, Guangdong, Peoples R China 6.Hefei Natl Lab, Shenzhen Branch, Shenzhen, Guangdong, Peoples R China 7.Japan Synchrotron Radiat Res Inst JASRI, Sayo, Hyogo, Japan 8.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei, Anhui, Peoples R China 9.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Natl Key Lab Mat Integrated Circuits, Shanghai, Peoples R China 10.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Adv Res Inst, Shanghai, Peoples R China 11.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiang-Rui,Zhu, Ming-Yuan,Feng, Yuanwen,et al. Observation of floating surface state in obstructed atomic insulator candidate NiP₂[J]. NPJ QUANTUM MATERIALS,2024,9(1):8.
APA	Liu, Xiang-Rui.,Zhu, Ming-Yuan.,Feng, Yuanwen.,Zeng, Meng.,Ma, Xiao-Ming.,...&Liu, Chang.(2024).Observation of floating surface state in obstructed atomic insulator candidate NiP₂.NPJ QUANTUM MATERIALS,9(1),8.
MLA	Liu, Xiang-Rui,et al."Observation of floating surface state in obstructed atomic insulator candidate NiP₂".NPJ QUANTUM MATERIALS 9.1(2024):8.