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arXiv 2102.00878cond-mat.softcond-mat.stat-mech
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浓缩电解质理论中相关长度的正确标度

Correct scaling of the correlation length from a theory for concentrated electrolytes

A. Ciach, O. Patsahan

摘要:

发展了浓电解质的自洽理论。振荡衰减的电荷-电荷关联函数的衰减长度,显示出完美的协议与实验发现的,迄今无法解释的缩放得到。对于密度-密度关联,我们发现其衰减长度与电荷关联的衰减长度相当,并且在浓电解质中的关联长度主要依赖于电荷密度的局部方差。

英文摘要:

Self-consistent theory for concentrated electrolytes is developed. Oscillatory decay of the charge-charge correlation function with the decay length that shows perfect agreement with the experimentally discovered and so far unexplained scaling is obtained. For the density-density correlations, monotonic asymptotic decay with the decay length comparable with the decay length of the charge correlations is found. We show that the correlation lengths in concentrated electrolytes depend crucially on the local variance of the charge density.

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