Superconductivity in pressurized trilayer La4Ni3O10−δ single crystals

Yinghao Zhu, Di Peng, Enkang Zhang, Bingying Pan, Xu Chen, Lixing Chen, Huifen Ren, Feiyang Liu, Yiqing Hao, Nana Li, Zhenfang Xing, Fujun Lan, Jiyuan Han, Junjie Wang, Donghan Jia, Hongliang Wo, Yiqing Gu, Yimeng Gu, Li Ji, Wenbin Wang, Huiyang Gou, Yao Shen, Tianping Ying, Xiaolong Chen, Wenge Yang, Huibo Cao, Changlin Zheng, Qiaoshi Zeng (), Jian-gang Guo () and Jun Zhao ()
Additional contact information
Yinghao Zhu: Fudan University
Di Peng: Institute for Shanghai Advanced Research in Physical Sciences (SHARPS)
Enkang Zhang: Fudan University
Bingying Pan: Ocean University of China
Xu Chen: Chinese Academy of Sciences
Lixing Chen: Fudan University
Huifen Ren: Chinese Academy of Sciences
Feiyang Liu: Fudan University
Yiqing Hao: Oak Ridge National Laboratory
Nana Li: Center for High Pressure Science and Technology Advanced Research
Zhenfang Xing: Center for High Pressure Science and Technology Advanced Research
Fujun Lan: Center for High Pressure Science and Technology Advanced Research
Jiyuan Han: Fudan University
Junjie Wang: Chinese Academy of Sciences
Donghan Jia: Center for High Pressure Science and Technology Advanced Research
Hongliang Wo: Fudan University
Yiqing Gu: Fudan University
Yimeng Gu: Fudan University
Li Ji: Fudan University
Wenbin Wang: Fudan University
Huiyang Gou: Center for High Pressure Science and Technology Advanced Research
Yao Shen: Chinese Academy of Sciences
Tianping Ying: Chinese Academy of Sciences
Xiaolong Chen: Chinese Academy of Sciences
Wenge Yang: Center for High Pressure Science and Technology Advanced Research
Huibo Cao: Oak Ridge National Laboratory
Changlin Zheng: Fudan University
Qiaoshi Zeng: Institute for Shanghai Advanced Research in Physical Sciences (SHARPS)
Jian-gang Guo: Chinese Academy of Sciences
Jun Zhao: Fudan University

Nature, 2024, vol. 631, issue 8021, 531-536

Abstract: Abstract The pursuit of discovering new high-temperature superconductors that diverge from the copper-based model1–3 has profound implications for explaining mechanisms behind superconductivity and may also enable new applications4–8. Here our investigation shows that the application of pressure effectively suppresses the spin–charge order in trilayer nickelate La4Ni3O10−δ single crystals, leading to the emergence of superconductivity with a maximum critical temperature (Tc) of around 30 K at 69.0 GPa. The d.c. susceptibility measurements confirm a substantial diamagnetic response below Tc, 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.

Date: 2024
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DOI: 10.1038/s41586-024-07553-3

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