Collective magnetic dynamics in artificial spin ice probed by AC susceptibility

Abstract

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.

arXiv comment7 pages, 4 figures

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Cited by in corpus (12)

• Topological Kinetic Crossover in a Nanomagnet Array
• Magnetic-Field-Dependent Thermodynamic Properties of Square and Quadrupolar Artificial Spin Ice
• The effect of confinement on thermally induced fluctuations in nanomagnets
• Multiple energy-scales in vertex-frustrated mesospin systems
• Collective ferromagnetism of artificial square spin ice
• Temperature induced collapse of spin dimensionality in magnetic metamaterials
• Thermal excitations within and among mesospins in artificial spin ice
• Texture fluctuations and emergent dynamics in coupled nanomagnets
• Mapping AC Susceptibility with Quantum Diamond Microscope
• Time scales in the thermal dynamics of magnetic dipolar clusters
• Magnetic Order and Long-Range Interactions in Mesoscopic Ising Chains
• Magnetic texture control in ion-implanted metamaterials