热声子相干性的基本概念
Fundamental concepts of thermal phonon coherence
- University of Nevada, Reno（内华达大学雷诺分校）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
该综述阐明热声子空间与时间相干性的基本理论，统一波动图像，为复杂材料热输运工程提供概念基础。
AI中文摘要：
随着科学家们寻求超越传统材料性能关系，具有人工周期性、构型复杂性和无序性的新型结构正被越来越多地探索。对于声子而言，这些架构可以引发显著的相位关联，从而强烈地将晶格热传导从传统的类粒子散射框架中转移出来。这种热声子相干性可以在空间和时间上分别发展，产生不同的波动现象。在此，我们严格概述了声子空间和时间相干性的理论。至关重要的是，本综述侧重于阐明并建立对连接文献中报道的各种热导率和声子性质结果的基本原理的概念性理解。此外，我们利用这种理解来建立热声子波动性质的全面物理图像，统一空间和时间相干性理论。总而言之，本综述中的理论剖析为理解和工程化复杂材料中的热声子提供了广泛的知识基础。
英文摘要：
As scientists seek to transcend traditional material property relationships, novel structures with artificial periodicity, configurational complexity, and disorder are increasingly being explored. For phonons, these architectures can induce significant phase correlations, which strongly shifts lattice heat conduction away from the conventional framework of particle-like scattering. This thermal phonon coherence can develop in space and time separately, resulting in distinct wave-like phenomena. Here we rigorously outline the theories of phonon spatial and temporal coherence. Crucially, this review focuses on demystifying and building conceptual understanding of the fundamental principles linking the various thermal conductivity and phonon property results reported in the literature. Furthermore, we use this understanding to establish a comprehensive physical picture of the wave nature of thermal phonons, unifying the spatial and temporal coherence theories. Altogether, the theoretical dissections in this review provide an extensive knowledge base for understanding and engineering thermal phonons in complex materials.
