New jamming scenario: from marginal jamming to deep jamming.
New jamming scenario: from marginal jamming to deep jamming.
复制标题
DOI：
10.1103/physrevlett.106.125503
复制
发表时间：
2011-01
影响因子：
8.6
通讯作者：
Cang Zhao;Kaiwen Tian;N. Xu
中科院分区：
文献类型：
--
作者：
Cang Zhao;Kaiwen Tian;N. Xu
我们研究了在大体积分数范围内无摩擦球体的堵塞填料的性质。存在一个交叉体积分数，将深度堵塞固体与轻度堵塞固体分开。在深度堵塞固体中，所有在边缘堵塞固体中出现的结垢都被具有潜在独立指数的显着不同的结垢所取代。相应的，与交叉相关的对分布函数也有结构性的变化。深度堵塞固体的正常振动模态也表现出一些异常，如准局域化增强和低频debye态密度的缺失。因此，深度堵塞系统可能被归类为一类新的非晶态固体。
We study the properties of jammed packings of frictionless spheres over a wide range of volume fractions. There exists a crossover volume fraction which separates deeply jammed solids from marginally jammed solids. In deeply jammed solids, all the scalings presented in marginally jammed solids are replaced with remarkably different ones with potential independent exponents. Correspondingly, there are structural changes in the pair distribution function associated with the crossover. The normal modes of vibration of deeply jammed solids also exhibit some anomalies, e.g., strengthened quasilocalization and the absence of Debye-like density of states at low frequencies. Deeply jammed systems may thus be cataloged to a new class of amorphous solids.