A Determinant Quantum Monte Carlo Study of an Effective Low Energy Model for Infinite-layer Nickelates

ORAL

Abstract

Our study was motivated by the recent experimental observation of superconductivity in layered nickelate heterostructures with Tc of about 9K to 15K (D Li, et al. 2019). Here, we use determinant quantum Monte Carlo (DQMC) simulations of a composite system, consisting of Hubbard-like Ni, or NiO2, layers coupled to metallic rare-earth layers, to investigate the physics associated with nickelate superconductors. We study the doping-dependent magnetic and electronic properties, such as spin and charge correlations, the single-particle spectral function, interlayer pair correlations, and even superfluid stiffness.

Reference:
Li, Danfeng, et al. "Superconductivity in an infinite-layer nickelate." Nature 572.7771 (2019): 624-627.

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Presenters

  • Fangze Liu

    • Stanford University

Authors

  • Fangze Liu

    • Stanford University

  • Xuxin Huang

    • Applied Physics, Stanford University
    • Stanford University

  • Brian Moritz

    • SLAC National Accelerator Laboratory and Stanford University, SSRL Materials Science Division
    • SLAC National Accelerator Laboratory
    • SLAC
    • Stanford University
    • SIMES, SLAC
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA

  • Edwin Huang

    • University of Illinois at Urbana-Champaign
    • SLAC National Accelerator Laboratory

  • Thomas Devereaux

    • Stanford Univ
    • Materials Science and Engineering, Stanford University
    • Stanford University
    • SLAC National Accelerator Laboratory
    • Photon Sciences, Stanford Linear Accelerator (SLAC)
    • SIMES, SLAC
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
    • SLAC National Accelerator Lab.