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Atomic scale disorder and reconstruction in bulk infinite-layer nickelates lacking superconductivity

文献类型：期刊论文

作者Hu, Kejun3; Li, Qing1,2; Song, Dongsheng3; Jia, Yingze3; Liang, Zhiyao3; Wang, Shuai3; Du, Haifeng4; Wen, Hai-Hu1,2; Ge, Binghui3
刊名NATURE COMMUNICATIONS
出版日期2024-06-14
卷号15
DOI10.1038/s41467-024-49533-1
通讯作者Song, Dongsheng(dsong@ahu.edu.cn) ; Wen, Hai-Hu(hhwen@nju.edu.cn) ; Ge, Binghui(bhge@ahu.edu.cn)
英文摘要The recent discovery of superconductivity in infinite-layer nickelate films has sparked significant interest and expanded the realm of superconductors, in which the infinite-layer structure and proper chemical doping are both of the essence. Nonetheless, the reasons for the absence of superconductivity in bulk infinite-layer nickelates remain puzzling. Herein, we investigate atomic defects and electronic structures in bulk infinite-layer Nd0.8Sr0.2NiO2 using scanning transmission electron microscopy. Our observations reveal the presence of three-dimensional (3D) block-like structural domains resulting from intersecting defect structures, disrupting the continuity within crystal grains, which could be a crucial factor in giving rise to the insulating character and inhibiting the emergence of superconductivity. Moreover, the infinite-layer structure, without complete topotactic reduction, retains interstitial oxygen atoms on the Nd atomic plane in bulk nickelates, possibly further aggravating the local distortions of NiO2 planes and hindering the superconductivity. These findings shed light on the existence of structural and atomic defects in bulk nickelates and provide valuable insights into the influence of proper topotactic reduction and structural orders on superconductivity. The authors study the bulk form of infinite-layer Nd0.8Sr0.2NiO2 using scanning transmission electron microscopy. They argue that these structural defects and local distortions could be responsible for the lack of superconductivity in bulk infinite-layer nickelates.
WOS关键词INTERFACE
资助项目Natural Science Foundation of Anhui Province (Anhui Provincial Natural Science Foundation)[2022YFA1403200] ; Natural Science Foundation of Anhui Province (Anhui Provincial Natural Science Foundation)[2022YFA1403603] ; National Key R&D Program of China[52325105] ; National Natural Science Funds for Distinguished Young Scholar[11874394] ; National Natural Science Funds for Distinguished Young Scholar[52173215] ; National Natural Science Funds for Distinguished Young Scholar[12061131001] ; National Natural Science Funds for Distinguished Young Scholar[A0402/11927809] ; National Natural Science Funds for Distinguished Young Scholar[12204231] ; National Natural Science Foundation of China ; National Natural Science Fund for Excellent Young Scientists Fund Program (Overseas)[2108085Y03] ; Natural Science Foundation of Anhui Province for Excellent Young Scientist[GXXT-2020-003] ; University Synergy Innovation Program of Anhui Province
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:001249242700025
出版者NATURE PORTFOLIO
资助机构Natural Science Foundation of Anhui Province (Anhui Provincial Natural Science Foundation) ; National Key R&D Program of China ; National Natural Science Funds for Distinguished Young Scholar ; National Natural Science Foundation of China ; National Natural Science Fund for Excellent Young Scientists Fund Program (Overseas) ; Natural Science Foundation of Anhui Province for Excellent Young Scientist ; University Synergy Innovation Program of Anhui Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/136352]  
专题中国科学院合肥物质科学研究院
通讯作者Song, Dongsheng; Wen, Hai-Hu; Ge, Binghui
作者单位1.Nanjing Univ, Dept Phys, Nanjing, Peoples R China
2.Nanjing Univ, Ctr Superconducting Phys & Mat, Natl Lab Solid State Microstruct, Nanjing, Peoples R China
3.Anhui Univ, Inst Phys Sci & Informat Technol, Informat Mat & Intelligent Sensing Lab Anhui Prov, Anhui Key Lab Magnet Funct Mat & Devices, Hefei, Peoples R China
4.Chinese Acad Sci, Anhui Key Lab Condensed Matter Phys Extreme Condit, High Magnet Field Lab, HFIPS, Hefei, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Kejun,Li, Qing,Song, Dongsheng,et al. Atomic scale disorder and reconstruction in bulk infinite-layer nickelates lacking superconductivity[J]. NATURE COMMUNICATIONS,2024,15.
APA Hu, Kejun.,Li, Qing.,Song, Dongsheng.,Jia, Yingze.,Liang, Zhiyao.,...&Ge, Binghui.(2024).Atomic scale disorder and reconstruction in bulk infinite-layer nickelates lacking superconductivity.NATURE COMMUNICATIONS,15.
MLA Hu, Kejun,et al."Atomic scale disorder and reconstruction in bulk infinite-layer nickelates lacking superconductivity".NATURE COMMUNICATIONS 15(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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