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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.

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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