论文标题
极地范德华液体中的非简单流动行为:范围下的结构松弛
Non-simple flow behavior in a polar van der Waals liquid: structural relaxation under scope
论文作者
论文摘要
结构放松的非指数特征被认为是玻璃动力学的标志之一,在这种情况下,介电技术观察到的奇异形状长期吸引了社区的注意。尤其是,迄今为止,极地玻璃形成器的极窄介电响应已归因于偶极跨相关。在这里,我们表明偶极相互作用可以搭配以剪切应力并改变流动行为,以防止简单液体行为发生。我们在玻璃动力学的一般框架和分子间相互作用的作用中讨论了我们的发现。
The non-exponential character of the structural relaxation is considered one of the hallmarks of the glassy dynamics and in this context, the singular shape observed by dielectric techniques has attracted the attention of the community for long time. Particularly, the exceptionally narrow dielectric response of polar glass formers has been attributed so far to dipolar cross correlations. Here we show that dipole interactions can couple to shear stress and modify the flow behavior preventing the occurrence of the simple liquid behavior. We discuss our findings in the general framework of the glassy dynamics and the role of intermolecular interactions.