Thermodynamic properties of 3D plaquette antiferromagnet

ORAL

Abstract

We design a 3D checker-board J-Q model to capture phase transitions between a plaquette-singlet solid with lattice translational symmetry breaking to a 3D Neel phase with spin rotational symmetry breaking. The system is investigated via unbiased large-scale quantum Monte Carlo simulation. We use Binder cumulant to determine the finite temperature phase boundary and measure the specific heat and magnetic susceptibility to reveal the nature of the different phases and their transitions. Our results are closely related with the on-going experimental effort in pressure-induced magnetic phase transitions in Shastry- Sutherland (SS) compound SrCu2（BO3）2

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Presenters

  • Guang Yu Sun

    • Chinese Academy of Science

Authors

  • Guang Yu Sun

    • Chinese Academy of Science

  • Nusen Ma

    • Chinese Academy of Science

  • Anders W Sandvik

    • Boston University & Chinese Academy of Science
    • Boston University &IOP-CAS Beijing
    • Physics Department, Boston University
    • Boston University / IOP-CAS, Beijing
    • Boston University

  • Zi Yang Meng

    • Institute of Physics, Chinese Academy of Sciences
    • Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Science
    • Institute of physics, Chinese Academy of Sciences
    • Chinese Academy of Science
    • Chinese Academy of Sciences
    • Chinese Academy of Sciences (CAS), China
    • Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
    • Institute of Physics, CAS
    • Institute of Physics, Chinese Academy of Science