Non-monotonic temperature evolution of nonlocal structure-dynamics correlation in CuZr glass-forming liquids

• 作者: W J Jiang M Z Li
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（7）
• 所属期刊栏目: CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROP-ERTIES
• 页码范围: 419-425
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/abf113

摘要

The structure-dynamics correlations in a nonlocal manner were investigated in CuZr metallic glass-forming liquids via classical molecular dynamics simulations.A spatial coarse-graining approach was employed to incorporate the nonlo-cal structural information of given structural order parameters in the structure-dynamics relationship.It is found that the correlation between structure order parameters and dynamics increases with increasing coarse-graining length and has a characteristic length scale.Moreover,the characteristic correlation length exhibits a non-monotonic temperature evolution as temperature approaches glass transition temperature,which is not sensitive to the considered structure order parameters.Our results unveil a striking change in the structure-dynamics correlation,which involves no fitting theoretical interpreta-tion.These findings provide new insight into the structure-dynamics correlation in glass transition.