Simple description of shear dynamics of glasses with crystalline local order

4th International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Son, Leonid^1

Ural Federal University, 19 Mira st., Ekaterinburg

620002, Russia^1

关键词: Dislocations and disclinations;    Glassformers;    Local order;    Shear dynamics;    Topological defect;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/633/1/012026/pdf
DOI  :  10.1088/1742-6596/633/1/012026

来源: IOP

【 摘 要 】

For those glassformers (especially metallic glasses), which structure may be presented as a set of linear topological defects embedded into a media with crystalline local order, we suggest a description of the shear dynamics in terms of kinks motion along the topological defect lines, as it is customary for crystalline materials. Locally, these defects are similar to dislocations and disclinations. For the motion of the kink, we write out the Fokker - Planck equation in a self - consistent potential. The glass transition occurs to be described as a localization of the kink.