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Crystal growth and characterization of the magnetic properties of intercalated transition metal dichalcogenides

ORAL

Abstract

The intercalated transition metal dichalcogenide (TMDC) Cr1/3NbS2 has attracted significant interest in recent years due to reports of a magnetic soliton lattice in this material in finite fields. This novel topological state of matter is understood to result from competing Zeeman, Dzyaloshinskii-Moriya and ferromagnetic exchange terms in the spin Hamiltonian. Despite this theoretical understanding, there are few other experimental realizations of soliton lattice materials beyond the singular compound Cr1/3NbS2. With this motivation in mind, we have undertaken a concerted effort at Illinois to grow large single crystals of additional intercalated TMDCs, and characterize them with a series of techniques, including magnetization, heat capacity, x-ray and neutron scattering. In this talk, I will report on these data and their implications for the magnetic ground states for each of the materials studied. In particular, I will report on our use of powder x-ray diffraction and magnetization to infer information about the centrosymmetry of the structure in these materials, and thus the potential for DM interactions. I will supplement with neutron diffraction from single crystals to comment on ordered ground states, and their potential to contain soliton phases in finite fields.

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Presenters

  • Kannan Lu

    University of Illinois at Urbana-Champaign

Authors

  • Kannan Lu

    University of Illinois at Urbana-Champaign

  • Deepak Sapkota

    The University of Tennesse, Knoxville

  • Adam Aczel

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

  • Lisa DeBeer-Schmitt

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

  • Yan Wu

    Oak Ridge National Lab, Oak Ridge National Laboratory

  • 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

  • Greg MacDougall

    University of Illinois at Urbana-Champaign, University of Illinois