Justin D. Watts

TL;DR: The thermodynamic properties of artificial spin ice are strongly influenced by the manner in which its constituent nanomagnets are arranged as mentioned in this paper, leading to emergent one-dimensional correlations.

TL;DR: In this article, the Shakti geometry of artificial spin ice has been studied and it has been shown that its disordered moment configuration is a topological phase described by an emergent dimer-cover model with excitations that can be characterized as topologically charged defects.

TL;DR: In this article, a quadrupole artificial spin-ice system consisting of interacting plaquettes of coupled single-domain nanomagnets that can be interpreted as a composite, ternary variable was designed and studied.

TL;DR: In this article, the authors conducted a thorough experimental study of the magnetoresistance of a connected honeycomb artificial spin ice, and presented a simulation methodology for understanding the detailed behavior of this complex correlated magnetic system.

TL;DR: In this paper, a detailed study on thermal annealing of the moment configuration in artificial spin ice was performed, and the authors found that increasing the interaction energy between island moments and reducing the energy barrier to flipping the island moments allow the system to more closely approach the collective low energy state of the moments upon anneeling, suggesting new channels for understanding the thermalization processes in these important model systems.