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Magnetic interactions in the 2D layered van der Waals semiconductor CrPS<sub>4</sub>

ORAL

Abstract

Compounds with two-dimensional layers weakly connected by van der Waals bonding offer routes to enhanced quantum behavior in the bulk as well as in reduced layer materials achieved through exfoliation analogous to graphene. The presence of magnetic ions in the layers can provide new fundamental insights and possible functionality. Consequently the search and investigation of such "beyond graphene" materials has proved a recent focus for research efforts. CrPS4 is such a semiconducting magnetic van der Waals material, however has undergone only limited experimental investigations to date. Here we present a series of neutron scattering measurements that allow the magnetic structure to be determined and exchange interactions extracted. The results reveal the subtle role of competing interactions, which manifest in a non-trivial magnetic transition and a tunable magnetic structure with small applied fields. Our results in the bulk compound provide intriguiing insights that can be applied to an understanding of the behavior of reduced layer CrPS4.

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Presenters

  • Stuart Calder

    Oak Ridge National Lab

Authors

  • Stuart Calder

    Oak Ridge National Lab

  • Amanda Haglund

    University of Tennessee

  • Yaohua Liu

    Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge National Lab, Oak Ridge National Laboratory

  • Daniel Pajerowski

    Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA, Oak Ridge National Lab, Oak Ridge National Laboratory

  • Huibo Cao

    Oak Ridge National Lab, Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA, Neutron Scattering Division, Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA, Oak Ridge Natl Lab

  • Travis Williams

    Oak Ridge National Lab, Oak Ridge National Laboratory

  • Vasile O Garlea

    Oak Ridge National Laboratory, Quantum Condensed Matter Div, Oak Ridge National Lab, Oak Ridge National Lab, Oak Ridge National Lab, Neutron Scattering Division

  • David Mandrus

    Physics, University of Tennessee, Materials Science and Engineering, The University of Tennessee, Department of Materials Science & Engineering, University of Tennessee, Knoxville, The University of Tennesse, Knoxville, University of Tennessee, Department of Physics and Astronomy, University of Tennessee, Oak Ridge National Laboratory, Department of Materials Science and Engineering, University of Tennessee Knoxville, Department of Materials Science and Engineering, University of Tennessee, University of Tennessee, Knoxville, Material Science and Technology Division, Oak Ridge National Laboratory, Material Science and Technology Division, Oak Ridge National Lab