What is a spin glass? A glimpse via mesoscopic noise
What is a spin glass? A glimpse via mesoscopic noise
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什么是自旋玻璃？
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
M. Weissman
中科院分区：
文献类型：
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作者：
M. Weissman
这是一个悬而未决的问题，无论是更准确地描述了一个模型的基础上，而紧凑的液滴，可以翻转热，或由图片的更扩散的翻转自旋与分层动力学所描述的属性。已经开发出用于分析介观样品中的自发涨落的技术，其可以直接解决这个问题。在一个著名的自旋玻璃，CuMn，实验结果更好地拟合的分级图片。这些介观方法可以直接测量亚稳组态空间的以前未探索的性质
It is an open question whether the slow dynamics of spin glasses is more accurately described by a model based on rather compact droplets which can flip thermally, or by a picture of more diffuse sets of flipping spins with properties described by hierarchical dynamics. Techniques have been developed for analyzing spontaneous fluctuations in mesoscopic samples which can directly address this question. In a well-known spin glass, CuMn, the experimental results are better fit by the hierarchical picture. Previously unexplored properties of the space of metastable configurations are directly measurable by these mesoscopic methods