We use Langevin dynamics simulations to study dense 2d systems of particles with both size and energy polydispersity. We compare two types of bidisperse systems which differ in the correlation between particle size and interaction parameters: in one system big particles have high interaction parameters and small particles have low interaction parameters, while in the other system the situation is reversed. We study the different phases of the two systems and compare them to those of a system with size but not energy bidispersity. We show that, depending on the strength of interaction between big and small particles, cooling to low temperatures yields either homogeneous glasses or mosaic crystals. We find that systems with low mixing interaction, undergo partial freezing of one of the components at intermediate temperatures, and that while this phenomenon is energy-driven in both size and energy bidisperse systems, it is controlled by entropic effects in systems with size bidispersity only.

中文翻译：

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具有尺寸和能量多分散性的系统：从玻璃到镶嵌晶体

我们使用朗之万动力学模拟来研究具有尺寸和能量多分散性的密集粒子二维系统。我们比较了两种类型的双分散系统，它们在粒径和相互作用参数之间的相关性方面有所不同：在一个系统中，大颗粒具有高相互作用参数，小颗粒具有低相互作用参数，而在另一个系统中，情况正好相反。我们研究了两个系统的不同阶段，并将它们与具有大小但没有能量双分散性的系统进行比较。我们表明，根据大小颗粒之间相互作用的强度，冷却到低温会产生均匀的玻璃或镶嵌晶体。我们发现具有低混合相互作用的系统在中间温度下会部分冻结其中一种成分，