论文标题
在随机固定的情况下，2D Hertzian领域的结构过渡的新机制
A new mechanism of structural transition in 2D Hertzian spheres in the presence of random pinning
论文作者
论文摘要
使用分子动力学模拟，我们研究了随机钉在二维（2D）系统的相图和熔化方案的影响，其HERTZ潜力的$α= 5/2 $。 For the first time it has been shown that random pinning can cardinally change the mechanism of first-order transition between the different crystalline phases (triangular and square) by virtue of generating hexatic and tetratic phases: a triangular crystal to hexatic transition is of the continuous Berezinskii-Kosterlitz-Thouless (BKT) type, a hexatic to tetratic transition is of the first-order, and最后，连续的BKT型从四晶体到方晶体。
Using molecular dynamics simulation we have investigated the influence of random pinning on the phase diagram and melting scenarios of a two-dimensional (2D) system with the Hertz potential for $α=5/2$. For the first time it has been shown that random pinning can cardinally change the mechanism of first-order transition between the different crystalline phases (triangular and square) by virtue of generating hexatic and tetratic phases: a triangular crystal to hexatic transition is of the continuous Berezinskii-Kosterlitz-Thouless (BKT) type, a hexatic to tetratic transition is of the first-order, and finally, a continuous BKT type transition from tetratic to the square crystal.
