The Phase Diagram of the Quantum Magnet SrCu2(BO3)2

ORAL

Abstract

SrCu2(BO3)2(SCBO) is one of the few real-world materials that corresponds to the Shastry-Sutherland model, with corner-sharing Cu S=1/2 dimers lying on a square lattice. The application of pressure can be used to tune the ground state of the system. High-resolution x-ray synchrotron experiments on SCBO at pressures up to 6 GPa reveal new structural peaks as a result of lattice distortions at low temperatures that we associate with long-range antiferromagnetic order. Additionally we have conducted high-pressure neutron diffraction measurements at pressures up to 7 GPa investigating the magnetic structure of SCBO and its link to structural distortions as a function of temperature.

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Authors

  • Sara Haravifard

    • University of Chicago / Argonne National Lab

  • Arnab Banerjee

    • University of Chicago

  • Jonathan Lang

    • Argonne National Lab

  • George Srajer

    • Argonne National Lab

  • D.M. Silevitch

    • University of Chicago

  • Stefan Klotz

    • University P\&M Curie

  • Bruce Gaulin

    • Department of Physics and Astronomy, McMaster University
    • McMaster University

  • Thomas Hansen

    • Institut Laue-Langevin

  • Hanna Dabkowska

    • McMaster University

  • Thomas Rosenbaum

    • University of Chicago