Electronic Structure across the Rare-Earth Series in Superconducting Infinite Layer Nickelates

ORAL

Abstract

The exciting discovery of superconductivity in oxygen-reduced monovalent nickelates has raised a new platform for the study of unconventional superconductivity, with similarities and differences to the cuprate high temperature superconductors. General trends appear in the infinite nickelates RNiO2 with rare-earths R spanning across the Lanthanides. The role of oxygen charge transfer diminishes in comparison to the cuprates, with an increased and prominent role played by rare-earth 5d electrons near the Fermi level when traversing from La to Lu. A decrease in lattice volume indicates that the magnetic exchange additionally grows, which may be favorable for superconductivity. However, compensation effects from the itinerant 5d electrons presents a close analogy to Kondo or Anderson lattices, indicating a more complex interplay between charge transfer, bandwidth renormalization, compensation, and magnetic exchange.

*This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division under contract DE-AC02-76SF00515.

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Presenters

  • Emily Been

    • SLAC National Accelerator Laboratory
    • Physics, Stanford University

Authors

  • Emily Been

    • SLAC National Accelerator Laboratory
    • Physics, Stanford University

  • Wei-Sheng Lee

    • Stanford Institute for Materials and Energy Sciences, SLAC - Natl Accelerator Lab
    • SLAC National Accelerator Laboratory
    • SIMES, SLAC

  • 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

  • Yi Cui

    • Materials Science & Engineering, Stanford University

  • Jan Zaanen

    • Leiden University
    • Leiden Institute of Physics, Leiden University

  • Thomas Devereaux

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

  • Brian John Moritz

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

  • Chunjing Jia

    • SLAC - Natl Accelerator Lab
    • SIMES, SLAC