| Effects of Localized Interface Phonons on Heat Conductivity in Ingredient Heterogeneous Solids |
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| 作者姓名： | 武媚 时若晨 亓瑞时 李跃辉 冯涛 刘秉尧 严靖园 李晓梅 刘哲彤 王涛 魏同波 刘志强 杜进隆 陈基 高鹏 |
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| 作者单位： | 1. International Center for Quantum Materials, Peking University;2. Electron Microscopy Laboratory, School of Physics, Peking University;3. Department of Physics, University of California at Berkeley;4. Research and Development Center for Semiconductor Lighting Technology,Institute of Semiconductors, Chinese Academy of Sciences;5. Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences;6. State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University;7. Collaborative Innovation Center of Quantum Matter;8. Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University |
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| 基金项目： | supported by the National Key R&D Program of China (Grant No. 2019YFA0708200)；;the National Natural Science Foundation of China (Grant Nos. 52125307, 11974023, 12104017, and 52021006)；;Youth Innovation Promotion Association, CAS； |
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| 摘 要： | Phonons are the primary heat carriers in non-metallic solids. In compositionally heterogeneous materials, the thermal properties are believed to be mainly governed by the disrupted phonon transport due to mass disorder and strain fluctuations, while the effects of compositional fluctuation induced local phonon states are usually ignored.Here, by scanning transmission electron microscopy electron energy loss spectroscopy and sophisticated calculations, we identify the vibrational properties of in...
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