Thermal conductivity of TMPS<sub>3</sub> (TM=Fe, Ni, and Mn): role of a boundary scattering

POSTER

Abstract

Among various van der Waals (vdW) materials, a TMPS3 (TM=Fe, Ni, Mn) group undergoes an antiferromagnetic transition at about 100 K, and hence can be an important magnetic layer in realizing multi-functional heterostructure. Although a thermal conduction through vdW materials is a fundamental issue in optimizing device performances, thermal properties of TMPS3 has rarely been studied. In this work, we measured the thermal conductivity of TMPS3 materials with a time-domain thermoreflectance method. We found that the cross-plane thermal conductivity of TMPS3 is relatively low compared to other vdW materials, such as graphite and transition-metal dichalcognides. By comparing the temperature–dependent thermal conductivities of these materials, we demonstrated that effective boundaries caused by a stacking fault of vdW layers act as a main scattering channel in the heat conduction in these materials.

Presenters

  • Hwiin Ju

    • Department of Physcis and Photon Science, Gwangju Institute of Science and Technology, Korea
    • Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, South Korea

Authors

  • Hwiin Ju

    • Department of Physcis and Photon Science, Gwangju Institute of Science and Technology, Korea
    • Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, South Korea

  • Younggwan Choi

    • Department of Physcis and Photon Science, Gwangju Institute of Science and Technology, Korea
    • Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, South Korea

  • DoGyeom Jeong

    • Department of Physcis and Photon Science, Gwangju Institute of Science and Technology, Korea
    • Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, South Korea

  • Sungmin Lee

    • 2 Center for Correlated Electron Systems, institute for Basic Science; and 3 Department of Physics and Astronomy ,Seoul National University, Seoul, South Korea

  • Je-Guen Park

    • Department of Physics and Astronomy, Seoul National University
    • Center for Correlated Electron Systems, Institute for Basic Science & Seoul National Univeristy
    • 2 Center for Correlated Electron Systems, institute for Basic Science; and 3 Department of Physics and Astronomy ,Seoul National University, Seoul, South Korea
    • Department of Physics and Astronomy, Seoul National University (SNU)
    • Seoul National University
    • Department of Physics & Astronomy, Seoul National University, Seoul, Korea
    • Center for Correlated Electron Systems, Institute for Basic Science (IBS), Korea

  • Jongseok Lee

    • Gwangju Institute of Science and Technology
    • Department of Physcis and Photon Science, Gwangju Institute of Science and Technology, Korea
    • Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, South Korea
    • Department of Physics and Photon science, Gwangju Institute of Science and Technology
    • Department of Physics and Photon Science, Gwangju Institute of Science and Technology
    • Physics and photon science, GIST