Superconductivity in infinite-layer Pr0.8Sr0.2NiO2 films on different substrates

ORAL

Abstract

This work was supported in part by the National Natural Science Foundation of China (Grant No. 12074411) and (Grant No. 11888101), the National Key Research and Development Program of China (Grant No. 2016YFA0300300 and 2017YFA0302900), the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No. XDB25000000) and the Research Program of Beijing Academy of Quantum Information Sciences (Grant No. Y18G06).

*The recent discovery of superconductivity in infinite-layer nickelates has motivated tremendous efforts to study these materials that are analogous to cuprates. However, superconductivity in infinite-layer nickelates has been realized only in thin films grown on SrTiO3 substrates, thus raising the question of whether it is interface-induced and the query into the role of SrTiO3 substrate. Here, we report the observation of superconductivity in Pr0.8Sr0.2NiO2 films prepared at almost the same conditions except they are grown on different substrates (LaAlO3)0.3Sr2AlTaO6)0.7(LSAT) and SrTiO3 with the corresponding onset of superconductivity maximized at 15 K and 9K, respectively. Our results not only suggest that the superconductivity in infinite-layer nickelates is unlikely an interface-induced phenomenon and that the SrTiO3 substrate is n

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Publication: arXiv:2109.05761

Presenters

  • Qiang Gao

    • Institute of Physics

Authors

  • Qiang Gao

    • Institute of Physics

  • Zhihai Zhu

    • Massachusetts Institute of Technology MIT
    • Institute of Physics, Chinese Academy of Sciences

  • Xingjiang Zhou

    • Chinese Academy of Sciences
    • Institute of Physics, the Chinese Academy of Sciences

  • Xiaolin Ren

    • Institute of Physics, Chinese Academy of Sciences

  • Hailan Luo

    • Institute of Physics, Chinese Academy of Sciences
    • the chinese academy of science