Interfacial Mott state in iridate-nickelate superlattices

ORAL

Abstract

In new SrIrO3/LaNiO3 superlattices up to a full electron transfer at the interface from Ir to Ni is experimentally observed, triggering a massive structural and electronic reconstruction. The large crystal eld splitting from the distorted interfacial IrO6 octahedra surprisingly dominates over the spin-orbit coupling, and together with the Hund's coupling results in the high-spin (S = 1) congurations on both Ir and Ni sites. First-principles calculations agree well with the experimental results, supporting the formation of an intricate Mott state in the superlattices.

*1. Gordon and Betty Moore Foundation's EPiQS Initiative through Grant GBMF4534, and by the Department of Energy under grant DE-SC0012375.
2. Oce of Naval Research grant N00014-17-1-2770 and the Department of Defense High Performance Computing Modernization Program for computational resources.
3. NSF DMREF DMR-1629059.

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Presenters

  • Xiaoran Liu

    • Rutgers University, New Brunswick

Authors

  • Xiaoran Liu

    • Rutgers University, New Brunswick

  • Michele Kotiuga

    • Rutgers University, New Brunswick

  • Heung Sik Kim

    • Rutgers University, New Brunswick
    • Department of Physics and Astronomy, Rutgers University

  • Alpha N'Diaye

    • Advanced Light Source, Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Laboratory
    • Advanced Light Source
    • Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA

  • Yongseong Choi

    • Argonne National Laboratory
    • Advanced Photon Source, Argonne National Laboratory
    • Advanced Photon Source
    • Argonne National Lab

  • Yanwei Cao

    • Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
    • Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences.
    • Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
    • Chinese Academy of Science

  • Banabir Pal

    • Rutgers University, New Brunswick

  • Fangdi Wen

    • Rutgers University, New Brunswick

  • Mikhail Kareev

    • Rutgers University, New Brunswick

  • John William Freeland

    • Advanced Photon Source, Argonne National Laboratory
    • Advanced Photon Source

  • Daniel Haskel

    • Advanced Photon Source, Argonne National Laboratory
    • Advanced Photon Source
    • Argonne National Lab

  • Padraic Shafer

    • Advanced Light Source, Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Laboratory
    • Advanced Light Source

  • Elke Arenholz

    • Advanced Light Source, Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Laboratory
    • Advanced Light Source

  • Kristjan Haule

    • Rutgers University, New Brunswick
    • Physics and Astronomy, Rutgers University
    • Department of Physics and Astronomy, Rutgers University
    • Department of Physics, Rutgers University
    • Physics and Astronomy, Rutgers University, Piscataway, NJ, United States

  • David Vanderbilt

    • Rutgers University, New Brunswick
    • Department of Physics and Astronomy, Rutgers University
    • Department of Physics and Astronomy, Rutgers University, Piscataway, NJ-08854, USA
    • Physics and Astronomy, Rutgers University, New Brunswick
    • Department of Physics and Astronomy, Rutgers University, New Jersey
    • Rutgers University, USA
    • Rutgers Univ
    • Physics and Astronomy, Rutgers University, Piscataway, NJ, United States
    • Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, USA

  • Karin Rabe

    • Rutgers University, New Brunswick
    • Department of Physics and Astronomy, Rutgers University, Piscataway, NJ-08854, USA
    • Physics and Astronomy, Rutgers University, Piscataway, NJ, United States

  • Jak Chakhalian

    • Rutgers University, New Brunswick