In situ soft chemistry engineering of nickelate superconductors

ORAL

Abstract

Superconducting infinite-layer nickelate thin films are obtained by topotactic reduction from the perovskite precursor phase [1]. In aim of improving the understanding and control of the oxygen deintercalation reaction, and improving the quality of superconducting nickelate thin films, we have developed an experimental platform that can monitor the topotactic reduction by transport measurements between 620 K and 2 K. Precise control of the chemical reaction provides a new way to tune the electronic properties of nickelate superconductors. The technique of in situ soft chemistry engineering also opens the possibility of exploring emergent quantum phases in other oxide thin films that can undergo topochemical reactions.

References

[1] D. Li et al., Nature 572, 624 (2019)

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Presenters

  • Yijun Yu

    • Fudan Univ
    • Stanford University

Authors

  • Yijun Yu

    • Fudan Univ
    • Stanford University

  • Yonghun Lee

    • Stanford University
    • Stanford University, SLAC National Accelerator Laboratory

  • Kyuho Lee

    • Stanford University
    • Stanford University, SLAC National Accelerator Laboratory

  • Martin Gonzalez

    • Stanford University
    • Stanford University, SLAC National Accelerator Laboratory

  • Bai Yang Wang

    • Stanford University
    • Stanford University, SLAC National Accelerator Laboratory

  • Woojin Kim

    • Stanford University
    • Stanford Institute for Materials and Energy Sciences

  • Jennifer Fowlie

    • Stanford University
    • Stanford University, SLAC National Accelerator Laboratory

  • Harold Hwang

    • Stanford Univ
    • Stanford University