声子
横截面
凝聚态物理
非弹性中子散射
非晶态金属
分子动力学
材料科学
动量转移
非弹性散射
物理
散射
合金
光学
复合材料
量子力学
工程类
结构工程
作者
Xiyang Li,H.P. Zhang,Si Lan,D. L. Abernathy,Toshiya Otomo,Fangwei Wang,Yang Ren,Maozhi Li,Xun‐Li Wang
标识
DOI:10.1103/physrevlett.124.225902
摘要
Using inelastic neutron scattering and molecular dynamics simulations on a model Zr-Cu-Al metallic glass, we show that transverse phonons persist well into the high-frequency regime, and can be detected at large momentum transfer. Furthermore, the apparent peak width of the transverse phonons was found to follow the static structure factor. The one-to-one correspondence, which was demonstrated for both Zr-Cu-Al metallic glass and a three-dimensional Lennard-Jones model glass, suggests a universal correlation between the phonon dynamics and the underlying disordered structure. This remarkable correlation, not found for longitudinal phonons, underscores the key role that transverse phonons hold for understanding the structure-dynamics relationship in disordered materials.
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