Ultrasound Studies of the Magnetic Weyl Semimetal Co3Sn2S

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.

–

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