A New Synthetic Quantum Spin Liquid Candidate CCO111

ORAL

Abstract

Quantum spin liquid is a new state of quantum strongly correlated topological matter characterized by the presence of a Mott gap, topological order and fictionalized spectrum of spin excitations. Despite the tremendous progress in bulk synthesis of potential QSL candidates the `smoking-gun' compound remains elusive. Here, we present a new synthetic candidate QSL material successfully templated from (111)-oriented CoCr2O4 by pulsed laser deposition. Remarkably, as the thickness is reduced to four Kagome-triangular atomic planes, the magnetic ground state suddenly switches from a spiral order to the quantum paramagnetic regime with no sign of long-range spin ordering down to 30 mK and 9T. At the same time, the frustration factor rises by almost three orders of magnitude indicating the first realization of a quantum spin liquid state on the new artificial lattice. Our findings open the opportunities of achieving novel ultra-quantum states of matter in a broad class of synthetic materials.

*JC and XL acknowledge the support by the Gordon and Betty Moore Foundation EPiQS Initiative through Grant No. GBMF4534, and by the Department of Energy under Grant No. DE-SC0012375.

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Presenters

  • Jak Chakhalian

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

Authors

  • Xiaoran Liu

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

  • Sobhit Singh

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

  • Tomoya Asaba

    • Univ of Michigan - Ann Arbor
    • Physics, University of Michigan
    • Los Alamos National Laboratory
    • University of Michigan

  • Jess H Brewer

    • TRIUMF

  • qinghua zhang

    • CAS, Beijing National Laboratory for Condensed-Matter Physics and Institute of Physics
    • Institute of Physics, Chinese Academy of Sciences

  • John William Freeland

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

  • Srimanta Middey

    • Department of Physics, Indian Institute of Science
    • Indian Institute of Science

  • Mikhail Kareev

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

  • Dipankar Das Sarma

    • Department of Physics, Indian Institute of Science

  • Padraic Shafer

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

  • Elke Arenholz

    • Lawrence Berkeley National Lab
    • Advanced Light Source, LBNL
    • Adv Light Source LBL

  • Lu Li

    • Univ of Michigan - Ann Arbor
    • Department of Physics, University of Michigan
    • Physics, University of Michigan
    • University of Michigan

  • David Vanderbilt

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

  • Jak Chakhalian

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