Thermal transport in atomocally thin materials by the 3ω method

ORAL

Abstract

Quantum oscillations in the thermal conductance, quantized thermal Hall plateaus, and large phonon Hall conductances have been reported in bulk α-RuCl3, with competing interpretations of a bosonic or fermionic origin. Since α-RuCl3 is a layered material, thermal transport in thin exfoliated samples may provide new information, although the ~10-100 µm flake size makes for a challenging experiment. We are developing methods to measure thermal transport in suspended single- and few-layer thick films of atomically thin materials. Here we report progress toward demonstrating electronic methods to measure thermal transport in atomically thin materials, benchmarking against measurements of thin suspended silicon nitride sheets, and exfoliated hexagonal boron nitride down to the single layer limit.

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Presenters

  • Yiwei Le

    • Washington University, St. Louis

Authors

  • Yiwei Le

    • Washington University, St. Louis

  • Erdong Song

    • Washington University, St. Louis

  • Shiva Davari Dolatabadi

    • Washington University, St. Louis

  • Jason Li

    • Washington University, St. Louis

  • Xinyi Du

    • Washington University, St. Louis
    • Washington University in St. Louis

  • Kenji Watanabe

    • National Institute for Materials Science
    • NIMS
    • Research Center for Electronic and Optical Materials, National Institute for Materials Science
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science

  • Takashi Taniguchi

    • Kyoto Univ
    • National Institute for Materials Science
    • Research Center for Materials Nanoarchitectonics
    • Research Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Sciences
    • NIMS
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science
    • International Center for Materials Nanoarchitectonics, NIMS, Japan
    • International Center for Materials Nanoarchitectonics, Tsukuba
    • National Institue for Materials Science
    • Kyoto University
    • National Institute of Materials Science
    • International Center for Materials Nanoarchitectonics and National Institute for Materials Science

  • Erik Henriksen

    • Washington University, St. Louis