论文标题
AC易感性探测的人造自旋冰中的集体磁动力学
Collective magnetic dynamics in artificial spin ice probed by AC susceptibility
论文作者
论文摘要
我们报告了通过温度和频率依赖的AC敏感性探测的平方人造自旋冰的热动力学的研究。在样品的频率响应中发现了岛间耦合强度的明显影响。通过随后对频率和耦合依赖性的冻结温度的分析，我们讨论了Vogel-Fulcher-Tammann定律框架中获得的现象学参数，以样本显微镜特征。 AC敏感性的高灵敏度和稳健的信号与噪声比率验证了后者是一种有前途且简单的实验技术，用于解决人造自旋冰的情况下的动力学和温度驱动的动力学交叉。
We report on the study of the thermal dynamics of square artificial spin ice, probed by means of temperature and frequency dependent AC susceptibility. Pronounced influence of the inter-island coupling strength was found on the frequency response of the samples. Through the subsequent analysis of the frequency- and coupling-dependent freezing temperatures, we discuss the phenomenological parameters obtained in the framework of Vogel-Fulcher-Tammann law in terms of the samples microscopic features. The high sensitivity and robust signal to noise ratio of AC susceptibility validates the latter as a promising and simple experimental technique for resolving the dynamics and temperature driven dynamics crossovers for the case of artificial spin ice.
