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Pressure-induced monotonic enhancement of Tc to over 30 K in superconducting Pr0.82Sr0.18NiO2 thin films

Author

Listed:
  • N. N. Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • M. W. Yang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Z. Yang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • K. Y. Chen

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • H. Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Q. H. Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Z. H. Zhu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Y. Uwatoko

    (University of Tokyo)

  • L. Gu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • X. L. Dong

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • J. P. Sun

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • K. J. Jin

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • J.-G. Cheng

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

The successful synthesis of superconducting infinite-layer nickelate thin films with the highest Tc ≈ 15 K has ignited great enthusiasm for this material class as potential analogs of the high-Tc cuprates. Pursuing a higher Tc is always an imperative task in studying a new superconducting material system. Here we report high-quality Pr0.82Sr0.18NiO2 thin films with Tconset ≈ 17 K synthesized by carefully tuning the amount of CaH2 in the topotactic chemical reduction and the effect of pressure on its superconducting properties by measuring electrical resistivity under various pressures in a cubic anvil cell apparatus. We find that the onset temperature of the superconductivity, Tconset, can be enhanced monotonically from ~17 K at ambient pressure to ~31 K at 12.1 GPa without showing signatures of saturation upon increasing pressure. This encouraging result indicates that the Tc of infinite-layer nickelates superconductors still has room to go higher and it can be further boosted by applying higher pressures or strain engineering in the heterostructure films.

Suggested Citation

  • N. N. Wang & M. W. Yang & Z. Yang & K. Y. Chen & H. Zhang & Q. H. Zhang & Z. H. Zhu & Y. Uwatoko & L. Gu & X. L. Dong & J. P. Sun & K. J. Jin & J.-G. Cheng, 2022. "Pressure-induced monotonic enhancement of Tc to over 30 K in superconducting Pr0.82Sr0.18NiO2 thin films," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32065-x
    DOI: 10.1038/s41467-022-32065-x
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    References listed on IDEAS

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    Cited by:

    1. Simone Di Cataldo & Paul Worm & Jan M. Tomczak & Liang Si & Karsten Held, 2024. "Unconventional superconductivity without doping in infinite-layer nickelates under pressure," Nature Communications, Nature, vol. 15(1), pages 1-6, December.
    2. Dan Ferenc Segedin & Berit H. Goodge & Grace A. Pan & Qi Song & Harrison LaBollita & Myung-Chul Jung & Hesham El-Sherif & Spencer Doyle & Ari Turkiewicz & Nicole K. Taylor & Jarad A. Mason & Alpha T. , 2023. "Limits to the strain engineering of layered square-planar nickelate thin films," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    3. Zhe Liu & Mengwu Huo & Jie Li & Qing Li & Yuecong Liu & Yaomin Dai & Xiaoxiang Zhou & Jiahao Hao & Yi Lu & Meng Wang & Hai-Hu Wen, 2024. "Electronic correlations and partial gap in the bilayer nickelate La3Ni2O7," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    4. Kejun Hu & Qing Li & Dongsheng Song & Yingze Jia & Zhiyao Liang & Shuai Wang & Haifeng Du & Hai-Hu Wen & Binghui Ge, 2024. "Atomic scale disorder and reconstruction in bulk infinite-layer nickelates lacking superconductivity," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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