Vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals

Vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals

Predicting thermal transport in low-thermal-conductivity (κ L) materials is challenging. Here, the authors propose a dual-phonon theory, where normal phonons are treated using the Boltzmann thermal equation and diffuson-like phonons are treated within diffusion theory, yielding robust predictions of...

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Main Authors: Yixiu Luo, Xiaolong Yang, Tianli Feng, Jingyang Wang, Xiulin Ruan
Format: Article
Language:English
Published: Nature Publishing Group 2020-05-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-020-16371-w
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spelling doaj-49ac1d2a91a54debb064fc243ceddf232021-05-23T11:14:13ZengNature Publishing GroupNature Communications2041-17232020-05-0111111010.1038/s41467-020-16371-wVibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystalsYixiu Luo0Xiaolong Yang1Tianli Feng2Jingyang Wang3Xiulin Ruan4School of Mechanical Engineering and the Birck Nanotechnology Center, Purdue UniversitySchool of Mechanical Engineering and the Birck Nanotechnology Center, Purdue UniversityEnergy and Transportation Science Division, Oak Ridge National LaboratoryShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesSchool of Mechanical Engineering and the Birck Nanotechnology Center, Purdue UniversityPredicting thermal transport in low-thermal-conductivity (κ L) materials is challenging. Here, the authors propose a dual-phonon theory, where normal phonons are treated using the Boltzmann thermal equation and diffuson-like phonons are treated within diffusion theory, yielding robust predictions of κ L.https://doi.org/10.1038/s41467-020-16371-w
collection DOAJ
language English
format Article
sources DOAJ
author Yixiu Luo
Xiaolong Yang
Tianli Feng
Jingyang Wang
Xiulin Ruan
spellingShingle Yixiu Luo
Xiaolong Yang
Tianli Feng
Jingyang Wang
Xiulin Ruan
Vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals
Nature Communications
author_facet Yixiu Luo
Xiaolong Yang
Tianli Feng
Jingyang Wang
Xiulin Ruan
author_sort Yixiu Luo
title Vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals
title_short Vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals
title_full Vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals
title_fullStr Vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals
title_full_unstemmed Vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals
title_sort vibrational hierarchy leads to dual-phonon transport in low thermal conductivity crystals
publisher Nature Publishing Group
series Nature Communications
issn 2041-1723
publishDate 2020-05-01
description Predicting thermal transport in low-thermal-conductivity (κ L) materials is challenging. Here, the authors propose a dual-phonon theory, where normal phonons are treated using the Boltzmann thermal equation and diffuson-like phonons are treated within diffusion theory, yielding robust predictions of κ L.
url https://doi.org/10.1038/s41467-020-16371-w
work_keys_str_mv AT yixiuluo vibrationalhierarchyleadstodualphonontransportinlowthermalconductivitycrystals
AT xiaolongyang vibrationalhierarchyleadstodualphonontransportinlowthermalconductivitycrystals
AT tianlifeng vibrationalhierarchyleadstodualphonontransportinlowthermalconductivitycrystals
AT jingyangwang vibrationalhierarchyleadstodualphonontransportinlowthermalconductivitycrystals
AT xiulinruan vibrationalhierarchyleadstodualphonontransportinlowthermalconductivitycrystals
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