Manipulation of magnetic solitons on odd-numbered macrospin rings

Morgan, Jason and Cowburn, R. P. 2014. Manipulation of magnetic solitons on odd-numbered macrospin rings. ArXiv.

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Abstract

We report simulations of a frustrated odd-numbered macrospin ring system, with full point dipolar interactions, driven by a rotating uniform applied magnetic field of constant magnitude. The system is designed with equally-spaced radially-aligned macrospins, which must carry a frustrated soliton defect in its ground state. It is shown how correctly tuning the applied field magnitude can allow for non-trivial unidirectional propagation of the soliton, the required directional pressure acquired via the curvature of the ring. Furthermore, the system, which may be employed as a multiple rotation counter, is tested for robustness against quenched disorder as would be present in an experimental realization.

Item Type:	Working paper
Date Type:	Submission
Status:	Published
Schools:	Schools > Physics and Astronomy
Publisher:	ArXiv
Last Modified:	28 Jan 2026 15:32
URI:	https://orca.cardiff.ac.uk/id/eprint/157990

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