Skibinsky A, Buldyrev S V, Scala A, Havlin S, Stanley H E
Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215, USA.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1999 Sep;60(3):2664-9. doi: 10.1103/physreve.60.2664.
We investigate the formation of a two-dimensional quasicrystal in a monodisperse system, using molecular dynamics simulations of hard-sphere particles interacting via a two-dimensional square-well potential. We find that more than one stable crystalline phase can form for certain values of the square-well parameters. Quenching the liquid phase at a very low temperature, we obtain an amorphous phase. By heating this amorphous phase, we obtain a quasicrystalline structure with fivefold symmetry. From estimations of the Helmholtz potentials of the stable crystalline phases and of the quasicrystal, we conclude that the observed quasicrystal phase can be the stable phase in a specific range of temperatures.
我们使用通过二维方阱势相互作用的硬球粒子的分子动力学模拟，研究了单分散系统中二维准晶体的形成。我们发现，对于方阱参数的某些值，可以形成不止一种稳定的晶相。在非常低的温度下骤冷液相，我们得到非晶相。通过加热这种非晶相，我们得到具有五重对称性的准晶体结构。通过对稳定晶相和准晶体的亥姆霍兹自由能的估计，我们得出结论，观察到的准晶相在特定温度范围内可以是稳定相。
