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arXiv 1906.01646cond-mat.dis-nn
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薄膜几何中自旋玻璃老化动力学的维度交叉

Dimensional crossover in the aging dynamics of spin glasses in a film geometry

L. A. Fernandez, E. Marinari, V. Martin-Mayor, I. Paga, J. J. Ruiz-Lorenzo

摘要:

最近的实验的特殊精度的动机,我们研究数值的自旋玻璃动力学的薄膜几何形状。我们涵盖了所有相关的时间制度,从皮秒到平衡,在温度和低于3D临界点。从3D到2D动力学的维度交叉,当相关长度变得与膜厚度相当时开始,由四个动力学制度组成。我们的分析,基于重整化群变换,发现一致的整体物理图片所采用的Orbach等人。在解释他们的实验。

英文摘要:

Motivated by recent experiments of exceptional accuracy, we study numerically the spin-glass dynamics in a film geometry. We cover all the relevant time regimes, from picoseconds to equilibrium, at temperatures at and below the 3D critical point. The dimensional crossover from 3D to 2D dynamics, that starts when the correlation length becomes comparable to the film thickness, consists of four dynamical regimes. Our analysis, based on a Renormalization Group transformation, finds consistent the overall physical picture employed by Orbach et al. in the interpretation of their experiments.

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