MOLECULAR-DYNAMICS STUDY OF A 3-DIMENSIONAL ONE-COMPONENT MODEL FOR DISTORTIVE PHASE-TRANSITIONS
MOLECULAR-DYNAMICS STUDY OF A 3-DIMENSIONAL ONE-COMPONENT MODEL FOR DISTORTIVE PHASE-TRANSITIONS
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DOI：
10.1103/physrevb.17.1302
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发表时间：
1978-01-01
影响因子：
3.7
通讯作者：
STOLL, E
中科院分区：
文献类型：
--
作者：
SCHNEIDER, T;STOLL, E
分子动力学模拟的正则系综与近守恒能量的结果，并讨论了一个单组分模型表现出扭曲的连续相变。我们的结果表明：（i）静态性质与普适性假设一致;（ii）团簇的形成;（iii）低于Tc的温度窗口中的第二声;（iv）由于团簇动力学和热扩散引起的中心峰;（v）临界慢化数据与动力学临界现象的普适性假设一致;以及（vi）第二声区中的包络类孤子热脉冲传播。
Molecular-dynamics results simulating a canonical ensemble with nearly conserved energy are presented and discussed for a one-component model exhibiting a distortive continuous-phase transition. Our results demonstrate (i) that the static properties are consistent with the universality hypothesis;(ii) the formation of clusters;(iii) second sound in a temperature window below T c;(iv) central peaks due to the cluster dynamics and heat diffusion;(v) that the critical slowing-down data are consistent with the universality hypothesis for dynamic critical phenomena; and (vi) envelope solitonlike heat-pulse propagation in the second-sound regime.