Full aging in spin glasses.
Full aging in spin glasses.
复制标题
在旋转玻璃中完全老化。
DOI：
10.1103/physrevlett.91.037203
复制
发表时间：
2002
影响因子：
8.6
通讯作者：
R. Orbach
中科院分区：
文献类型：
--
作者：
G. F. Rodriguez;G. G. Kenning;R. Orbach
1983年自旋玻璃磁化衰减中动态记忆效应的发现标志着对高度无序自旋玻璃态研究的转折点。对记忆效应的深入研究使我们对相空间的定性特征的理解有了很大的进展。即便如此，磁化衰减函数的确切性质仍然难以捉摸，造成混乱。在这封信中，我们报告了强有力的证据表明，热释电磁化衰减的规模与等待时间t（w）。通过采用一系列的冷却协议，我们证明，在样品被冷却到测量温度的速率起着重要的作用，在确定的缩放。随着有效冷却时间t（eff）（c）的减小，t/t（w）缩放得到改善，并且对于t（eff）（c）<20 s，我们发现几乎完美的t/t（w）缩放，即，完全老化。
The discovery of dynamic memory effects in the magnetization decays of spin glasses in 1983 marked a turning point in the study of the highly disordered spin glass state. Detailed studies of the memory effects have led to much progress in understanding the qualitative features of the phase space. Even so, the exact nature of the magnetization decay functions has remained elusive, causing confusion. In this Letter, we report strong evidence that the thermoremanent magnetization decays scale with the waiting time t(w). By employing a series of cooling protocols, we demonstrate that the rate at which the sample is cooled to the measuring temperature plays a major role in the determination of scaling. As the effective cooling time t(eff)(c) decreases, t/t(w) scaling improves and for t(eff)(c)<20 s we find almost perfect t/t(w) scaling, i.e., full aging.