Visualizing extended defects at the atomic level in a Bi2Sr2CaCu2O8+δ superconducting wire
Kejun Hu(胡柯钧), Shuai Wang(王帅), Boyu Li(李泊玉), Ying Liu(刘影)†, Binghui Ge(葛炳辉), and Dongsheng Song(宋东升)‡
Information Materials and Intelligent Sensing Laboratory of Anhui Province, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
Abstract The microstructure significantly influences the superconducting properties. Herein, the defect structures and atomic arrangements in high-temperature BiSrCaCuO (Bi-2212) superconducting wire are directly characterized via state-of-the-art scanning transmission electron microscopy. Interstitial oxygen atoms are observed in both the charge reservoir layers and grain boundaries in the doped superconductor. Inclusion phases with varied numbers of CuO layers are found, and twist interfaces with different angles are identified. This study provides insights into the structures of Bi-2212 wire and lays the groundwork for guiding the design of microstructures and optimizing the production methods to enhance superconducting performance.
Corresponding Authors:
Ying Liu, Dongsheng Song
E-mail: liuying.hube@outlook.com;dsong@ahu.eud.cn
Cite this article:
Kejun Hu(胡柯钧), Shuai Wang(王帅), Boyu Li(李泊玉), Ying Liu(刘影), Binghui Ge(葛炳辉), and Dongsheng Song(宋东升) Visualizing extended defects at the atomic level in a Bi2Sr2CaCu2O8+δ superconducting wire 2024 Chin. Phys. B 33 096101
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Negligible normal fluid in superconducting state of heavily overdoped Bi2Sr2CaCu2O8+δ detected by ultra-low temperature angle-resolved photoemission spectroscopy Chaohui Yin(殷超辉), Qinghong Wang(汪清泓), Yuyang Xie(解于洋), Yiwen Chen(陈逸雯), Junhao Liu(刘俊豪), Jiangang Yang(杨鉴刚), Junjie Jia(贾俊杰), Xing Zhang(张杏), Wenkai Lv(吕文凯), Hongtao Yan(闫宏涛), Hongtao Rong(戎洪涛), Shenjin Zhang(张申金), Zhimin Wang(王志敏), Nan Zong(宗楠), Lijuan Liu(刘丽娟), Rukang Li(李如康), Xiaoyang Wang(王晓洋), Fengfeng Zhang(张丰丰), Feng Yang(杨峰), Qinjun Peng(彭钦军), Zuyan Xu(许祖彦), Guodong Liu(刘国东), Hanqing Mao(毛寒青), Lin Zhao(赵林), Xintong Li(李昕彤), and Xingjiang Zhou(周兴江). Chin. Phys. B, 2024, 33(7): 077405.
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