Superconductivity in pressurized trilayer La4Ni3O10-δ single crystals

• 成果类型: Article
• 署名作者: Zhu, Yinghao; Peng, Di; Zhang, Enkang; Pan, Bingying; Chen, Xu; Chen, Lixing; Ren, Huifen; Liu, Feiyang; Hao, Yiqing; Li, Nana; Xing, Zhenfang; Lan, Fujun; Han, Jiyuan; Wang, Junjie; Jia, Donghan; Wo, Hongliang; Gu, Yiqing; Gu, Yimeng; Ji, Li; Wang, Wenbin; Gou, Huiyang; Shen, Yao; Ying, Tianping; Chen, Xiaolong; Yang, Wenge; Cao, Huibo; Zheng, Changlin; Zeng, Qiaoshi; Guo, Jian-gang; Zhao, Jun
• 署名单位: Fudan University; Fudan University; Ocean University of China; Chinese Academy of Sciences; Institute of Physics, CAS; United States Department of Energy (DOE); Oak Ridge National Laboratory; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Fudan University; Fudan University
• 刊物名称: Nature
• ISSN/ISSBN: 0028-3697
• DOI: 10.1038/s41586-024-07553-3
• 发表日期: 2024-07-18
• 关键词: temperature; TRANSITION; resistivity

摘要

The pursuit of discovering new high-temperature superconductors that diverge from the copper-based model(1-3) has profound implications for explaining mechanisms behind superconductivity and may also enable new applications(4-8). Here our investigation shows that the application of pressure effectively suppresses the spin-charge order in trilayer nickelate La4Ni3O10-delta single crystals, leading to the emergence of superconductivity with a maximum critical temperature (T-c) of around 30 K at 69.0 GPa. The d.c. susceptibility measurements confirm a substantial diamagnetic response below T-c, indicating the presence of bulk superconductivity with a volume fraction exceeding 80%. In the normal state, we observe a strange metal behaviour, characterized by a linear temperature-dependent resistance extending up to 300 K. Furthermore, the layer-dependent superconductivity observed hints at a unique interlayer coupling mechanism specific to nickelates, setting them apart from cuprates in this regard. Our findings provide crucial insights into the fundamental mechanisms underpinning superconductivity, while also introducing a new material platform to explore the intricate interplay between the spin-charge order, flat band structures, interlayer coupling, strange metal behaviour and high-temperature superconductivity.