Synthesis and physical properties of infinite-layer nickelate crystals

ORAL

Abstract

Infinite-layer (IL) nickelates are an emerging family of superconductors whose synthesis in thin film form is an established process by now, whereas the growth of their bulk counterparts remains a formidable challenge. In a previous study, we achieved the reduction of perovskite La1-xCaxNiO3 single-crystals grown by a flux method under high external pressure to the IL phase La1-xCaxNiO2 [1]. The typical lateral dimension of these crystals was 150 μm. As an advanced approach, we recently accomplished the reduction of millimeter-sized LaNiO3 crystals obtained by optical floating zone growth under high oxygen gas pressure to the IL phase LaNiO2 [2]. We will present our characterization of the crystalline, magnetic, and electronic properties of the LaNiO2 crystals. Furthermore, we will provide an outlook on the realization of millimeter-sized PrNiO2 crystals, as well as crystals with hole- and electron doping.

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Publication: [1] P. Puphal et al., Topotactic transformation of single crystals: From perovskite to infinite-layer nickelates, Sci. Adv. 7, eabl8091 (2021).
[2] P. Puphal et al., Synthesis and physical properties of LaNiO2 crystals, arXiv:2209.12787 (2022).

Presenters

  • Pascal Puphal

    • Max Planck Institute for Solid State Research
    • Max-Planck-Institute for Solid State Research

Authors

  • Pascal Puphal

    • Max Planck Institute for Solid State Research
    • Max-Planck-Institute for Solid State Research

  • Vignesh Sundaramurthy

    • Max Planck Institute for Solid State Research

  • Valentin L Zimmermann

    • Max-Planck-Insitute for Solid State Research

  • Bjorn Wehinger

    • ESRF, Grenoble France
    • European Synchrotron Radiation Facility

  • Kathrin Küster

    • Max Planck Institute for Solid State Research

  • Ulrich Starke

    • Max Planck Institute for Solid State Research

  • Jürgen Nuss

    • Max Planck Institute for Solid State Research

  • Bernhard Keimer

    • Max Planck Institute for Solid State Physics
    • Max Planck Institute for Solid State Research
    • Max-Planck-Institute for Solid State Research

  • Masahiko Isobe

    • Max Planck Institute for Solid State Research
    • Max-Planck-Institute for Solid State Research

  • Matthias Hepting

    • Max Planck Institute for Solid State Research
    • Max-Planck-Institute for Solid State Research
    • Max Planck Institute for Solid State Physics, FRG