Superconducting Praseodymium Nickelate Thin Films via a Soft Chemistry Approach

ORAL

Abstract

A variety of nickel oxide compounds have long been studied for their manifestation of various correlated electron phenomena due to their analogous electronic or atomic structure to cuprates. Recently, superconductivity was observed in nanoscale infinite layer nickelate thin films of Nd0.8Sr0.2NiO2, epitaxially stabilized on SrTiO3 substrates via topotactic reduction from the perovskite precursor phase [1-4]. Here we present the synthesis and properties of PrNiO2 thin films on SrTiO3. Upon doping in Pr0.8Sr0.2NiO2, we observe superconductivity with a transition temperature of 7-12 K, and robust critical current density at 2 K of 334 kA/cm2 [5]. These findings indicate that superconductivity in the infinite layer nickelates is relatively insensitive to the details of the rare earth 4f configuration. Furthermore, they motivate the exploration of a broader family of compounds based on two-dimensional NiO2 planes.

[1] D. Li et al., Nature 572, 624 (2019).
[2] K. Lee et al., APL Mater. 8, 041107 (2020).
[3] D. Li et al., Phys. Rev. Lett. 125, 027001 (2020).
[4] S. Zeng et al., Phys. Rev. Lett. 125, 147003 (2020).
[5] M. Osada et al., Nano Lett. 20, 5735 (2020).

**Supported by DOE BES MSD (DE-AC02-76SF00515), the Moore Foundation (GBMF4415), and DOD AFOSR (FA 9550-16-1-0305).

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Presenters

  • Motoki Osada

    • Department of Applied Physics, Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC - Natl Accelerator Lab
    • Stanford Univ
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • Stanford University

Authors

  • Motoki Osada

    • Department of Applied Physics, Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC - Natl Accelerator Lab
    • Stanford Univ
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • Stanford University

  • Bai Yang Wang

    • Department of Physics, Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC - Natl Accelerator Lab
    • Stanford Univ
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • Stanford University

  • Shannon Harvey

    • Department of Applied Physics, Stanford University

  • Berit H. Goodge

    • School of Applied and Engineering Physics, Cornell University
    • Applied and Engineering Physics, Cornell University

  • Kyuho Lee

    • Department of Physics, Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC - Natl Accelerator Lab
    • Stanford Univ
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • Stanford University

  • Danfeng Li

    • Department of Applied Physics, Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC - Natl Accelerator Lab
    • Stanford Univ
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • Stanford University

  • Lena Fitting Kourkoutis

    • School of Applied and Engineering Physics, Cornell University
    • Applied and Engineering Physics, Cornell University
    • Cornell University

  • Harold Hwang

    • Department of Applied Physics, Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC - Natl Accelerator Lab
    • Stanford Univ
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • Stanford University
    • Standford University
    • Stanford Institute for Materials and Energy Sciences, Stanford University and SLAC National Accelerator Laboratory
    • SIMES, SLAC
    • Applied Physics, Stanford University