Magnetic reversal of an artificial square ice: dipolar correlation and charge ordering

Morgan, J P, Stein, A, Langridge, S and Marrows, C H 2011. Magnetic reversal of an artificial square ice: dipolar correlation and charge ordering. New Journal of Physics 13 , 105002. 10.1088/1367-2630/13/10/105002

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Abstract

Magnetic reversal of an artificial square ice pattern subject to a sequence of magnetic fields applied slightly off the diagonal axis is investigated via magnetic force microscopy of the remanent states that result. Sublattice independent reversal is observed via correlated incrementally pinned flip cascades along parallel dipolar chains, as evident from analysis of vertex populations and dipolar correlation functions. Weak dipolar interactions between adjacent chains favour antialignment and give rise to weak charge ordering of 'monopole' vertices during the reversal process.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	IOP Publishing
ISSN:	1367-2630
Last Modified:	25 May 2023 14:15
URI:	https://orca.cardiff.ac.uk/id/eprint/157998

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