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.
@article{arxiv.2001.04746,
title = {Collective magnetic dynamics in artificial spin ice probed by AC susceptibility},
author = {Merlin Pohlit and Giuseppe Muscas and Ioan-Augustin Chioar and Henry Stopfel and Agne Ciuciulkaite and Erik Östman and Spyridon D. Pappas and Aaron Stein and Björgvin Hjörvarsson and Petra E. Jönsson and Vassilios Kapaklis},
journal= {arXiv preprint arXiv:2001.04746},
year = {2020}
}