标题： 玻璃中玻色峰与第一尖锐衍射峰之间的关系 显示英文标题

标题： Relationship between the boson peak and first sharp diffraction peak in glasses

摘要： 玻色峰（BP）动力学指的是玻璃在太赫兹区域的普遍激发。 在本研究中，基于异质弹性理论（HET），对各种玻璃材料中的BP普遍动力学进行了定量评估，并成功提取了BP的决定因素。 观察到最大可能的粗粒化波数（HET中BP的决定因素）与第一尖锐衍射峰（FSDP）波数（玻璃中程有序的特征指标）之间存在强相关性。 结果表明，可以通过以下两个步骤对玻璃中BP的行为进行定量理解。 首先，代表玻璃中最大结构关联的FSDP主要用于确定弹性模量异质性的单元尺寸，其次，弹性模量波动的大小用于确定BP的频率和强度。 显示英文摘要

摘要： Boson peak (BP) dynamics refers to the universal excitation in the terahertz region of glass. In this study, the universal dynamics of BP were quantitatively evaluated in various glassy materials based on the heterogeneous elasticity theory (HET), and the determinants of BP were successfully extracted. A strong correlation was observed between the maximum possible coarse-graining wavenumber, which is a determinant of the BP in the HET, and the first sharp diffraction peak (FSDP) wavenumber, which is a characteristic index of the medium-range order in glasses. The results indicate that the behaviour of BP in glass can be quantitatively understood in the following two steps. First, the FSDP representing the largest structural correlation in glass is dominantly used to determine the unit size of the elastic modulus heterogeneity, and second, the magnitude of the elastic modulus fluctuation is used to determine the frequency and intensity of the BP.