Stripes, zigzags, and slow dynamics in buckled hard spheres.
Stripes, zigzags, and slow dynamics in buckled hard spheres.
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弯曲的硬球体中的条纹、之字形和缓慢的动态。
DOI：
10.1103/physrevlett.102.048303
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发表时间：
2008
影响因子：
8.6
通讯作者：
T. Lubensky
中科院分区：
文献类型：
--
作者：
Y. Shokef;T. Lubensky
我们研究了屈曲胶体单分子膜与三角晶格伊辛反铁磁体的类比。我们计算了自由体积诱导的Ising相互作用，展示了晶格形变如何有利于锯齿形条纹，从而部分消除了Ising模型的基态简并，并确定了阻止完美条纹的马氏体机制。缓慢地膨胀球体会产生干扰以及对数缓慢的松弛，这让人想起实验中观察到的玻璃动力学。
We study the analogy between buckled colloidal monolayers and the triangular-lattice Ising antiferromagnet. We calculate free-volume-induced Ising interactions, show how lattice deformations favor zigzag stripes that partially remove the Ising model ground-state degeneracy, and identify the martensitic mechanism prohibiting perfect stripes. Slowly inflating the spheres yields jamming as well as logarithmically slow relaxation reminiscent of the glassy dynamics observed experimentally.