Influence of stacking disorder on cross-plane thermal transport properties in TMPS3 (TM = Mn, Ni, Fe)
| Autor: | Jong Seok Lee, Soonmin Kang, Bong-Joong Kim, Wan-Gil Jung, Myung Joon Han, Young-Gwan Choi, Suhan Son, Hwiin Ju, Je-Geun Park, Myung-Chul Jung, Do-Gyeom Jeong |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Phonon scattering Scattering Stacking Heterojunction 02 engineering and technology Conductivity 021001 nanoscience & nanotechnology 01 natural sciences symbols.namesake Thermal conductivity 0103 physical sciences symbols Graphite van der Waals force 0210 nano-technology |
| Zdroj: | Applied Physics Letters. 117:063103 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | We investigated the thermal transport properties of magnetic van der Waals materials, TMPS3 (TM = Mn, Ni, and Fe), using the time-domain thermoreflectance technique. We determined the cross-plane thermal conductivity, which turns out to be relatively low, i.e., about 1 W m−1 K−1 for all TMPS3 investigated. When compared with previous results of graphite and transition metal dichalcogenides (TMDs), thermal conductivity becomes smaller as it goes from graphite to TMDs to TMPS3, and the difference is larger at low temperature, e.g., around 50 K. From the Callaway model analysis, we could attribute the large thermal conductivity reduction for TMPS3, particularly at low temperature, to the phonon scattering from the boundary. We actually confirmed the existence of the large population of the stacking faults with the cross-sectional transmission electron microscopy image of MnPS3. This suggests that intrinsic or extrinsic stacking faults formed in van der Waals materials and their heterostructures can play an important role in reducing the cross-plane thermal conductivity as a source of the boundary scattering. |
| Databáze: | OpenAIRE |
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