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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.

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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