Transport Characterization of Infinite Layer Nickelate Superconductor

ORAL

Abstract

The recently discovered infinite layer nickelate superconductor presents a potential new family of unconventional superconductors [1]. While sharing similar crystal structure with infinite layer cuprates, the electronic properties can be non-trivially distinct due to the relatively extreme valence state of Ni1+. DFT calculations have also pointed out potential involvement of multiple bands [2]. In this sense, a careful comparison against the cuprate system is imperative in obtaining a proper and unbiased view of the nickelate superconductivity. Furthermore, detailed characterization of the difference between the two systems may provide new insights into the ingredients of superconductivity in layered oxide systems. As a step in this direction, we investigate and report the magnetotransport properties of nickelates in both the normal and superconducting state.

[1] Li, D. et al. Superconductivity in an infinite-layer nickelate. Nature 572, 624–627 (2019).
[2] Lee, K.-W. & Pickett, W. E. Infinite-layer LaNiO2: Ni1+ is not Cu2+. Phys. Rev. B 70, 165109 (2004).

*Supported by the Moore Foundation (GBMF4415) and DOD AFOSR (FA 9550-16-1-0305).

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Presenters

  • Bai Yang Wang

    • Department of Physics, Stanford University
    • Physics, Stanford University
    • Stanford University

Authors

  • Bai Yang Wang

    • Department of Physics, Stanford University
    • Physics, Stanford University
    • Stanford University

  • Danfeng Li

    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
    • SLAC National Accelerator Lab.
    • Physics, Stanford University
    • Stanford University
    • Applied Physics, Stanford University

  • Kyuho Lee

    • Physics, Stanford University
    • Stanford University

  • Berit Goodge

    • Cornell University
    • Applied and Engineering Physics, Cornell University

  • Motoki Osada

    • Stanford University
    • Physics, Stanford University
    • Materials Science and Engineering, Stanford University

  • Lena Fitting Kourkoutis

    • Cornell University
    • Applied and Engineering Physics, Cornell University
    • Kavli Institute at Cornell for Nanoscale Science

  • Harold Hwang

    • Institute for Materials and Energy Sciences, Stanford University
    • Stanford University
    • Department of Applied Physics, Stanford University
    • Applied Physics, Stanford University
    • SIMES, SLAC
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
    • SLAC National Accelerator Lab.
    • Physics, Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory