Ultrasound Studies of the Magnetic Weyl Semimetal Co<sub>3</sub>Sn<sub>2</sub>S

ORAL

Abstract

Co3S2Sn2 is a magnetic Weyl semimetal that crystallizes in a shandite structure with the Co atoms forming a kagome lattice. It orders ferromagnetically at about 174 K with easy axis perpendicular to the kagome plane. Co3S2Sn2 displays a giant anomalous Hall effect as well as other transport anomalies characteristic of Weyl semimetals. Here we present Resonant Ultrasound (RUS) measurements on single crystals of Co3S2Sn2 as a function of temperature and magnetic field. RUS measures the mechanical resonances of the crystals and is highly sensitive to phase transitions and other thermodynamic irregularities in the sample.

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Presenters

  • Rui Xue

    • University of Tennessee, Knoxville

Authors

  • Rui Xue

    • University of Tennessee, Knoxville

  • Candice Kinsler-Fedon

    • University of Tennessee, Knoxville

  • Brianna Musico

    • University of Tennessee
    • University of Tennessee, Knoxville

  • Jiaqiang Yan

    • Materials Science and Engineering, The University of Tennessee
    • Oak Ridge National Lab
    • Oak Ridge National Laboratory
    • Materials Science and Technology Division, Oak Ridge National Laboratory
    • Materials Science and Technology Division, Oak Ridge National Lab
    • Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

  • Veerle M Keppens

    • University of Tennessee, Knoxville

  • 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