Doping evolution of the electronic structure in RENiO<sub>3</sub>

ORAL

Abstract

Rare earth nickelates (RENiO3) exhibit metal-insulator transitions accompanied by the appearance of charge and spin order, at times concurrently. The understanding of the evolving ground state in these materials is hindered by the existence of multiple competing orders which are further coupled to various kinds of local perturbations (strain, defects, disorder). Very recently, control of carrier doping by means of oxygen stoichiometry has been achieved in RENiO3, presenting an opportunity to study the broader electronic phase diagram of these systems. In this talk, I will present our recent soft X-ray spectroscopy, resonant scattering, and photoemission microscopy experiments on both pristine and electron doped RENiO3. Our results reveal the doping evolution of the electronic structure in RENiO3.

*This material is based upon work supported by the National Science Foundation under Grant No. 1751739

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Presenters

  • Jiarui Li

    • Massachusetts Institute of Technology MIT
    • Peking University, China

Authors

  • Jiarui Li

    • Massachusetts Institute of Technology MIT
    • Peking University, China

  • Robert Green

    • University of British Columbia
    • University of Saskatchewan

  • Zhihai Zhu

    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology

  • Grace H Zhang

    • Massachusetts Institute of Technology MIT

  • Da Zhou

    • Massachusetts Institute of Technology MIT

  • Min Gu Kang

    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology
    • Physics, MIT

  • Jerzy T. Sadowski

    • Center for Functional Nanomaterials, Brookhaven National Laboratory
    • Brookhaven National Laboratory

  • Ronny Sutarto

    • Canadian Light Source
    • Canadian Lightsource

  • Feizhou He

    • Canadian Light Source
    • Canadian Lightsource

  • Zhen Zhang

    • Purdue University

  • Yifei Sun

    • Purdue University

  • Shriram Ramanathan

    • Purdue University

  • Riccardo Comin

    • Massachusetts Institute of Technology MIT
    • Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
    • Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology
    • Physics, MIT