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Glass transition of binary mixtures of dipolar particles in two dimensions

机译:二维偶极粒子二元混合物的玻璃化转变

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摘要

We study the glass transition of binary mixtures of dipolar particles in two dimensions within the framework of mode-coupling theory, focusing in particular on the influence of composition changes. In a first step, we demonstrate that the experimental system of K?nig et al. [Eur. Phys. J. E 18, 287 (2005)] is well described by point dipoles through a comparison between the experimental partial structure factors and those from our Monte Carlo simulation. For such a mixture of point particles we show that there is always a plasticization effect, i.e. a stabilization of the liquid state due to mixing, in contrast to binary hard disks. We demonstrate that the predicted plasticization effect is in qualitative agreement with experimental results. Furthermore, also some general properties of the glass transition lines are discussed.
机译:我们在模式耦合理论的框架内研究了二维的偶极粒子的二元混合物的玻璃化转变,特别关注组成变化的影响。在第一步中,我们证明了K?nig等人的实验系统。 [欧元。物理J. E 18,287(2005)]通过比较实验部分结构因子与我们的蒙特卡洛模拟得到的点偶极子,很好地描述了点偶极子。对于这种点粒子的混合物,我们表明与二元硬盘相比,总是存在增塑作用,即由于混合而使液态稳定。我们证明预测的增塑作用与实验结果在质量上吻合。此外,还讨论了玻璃过渡线的一些一般性质。

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