Measuring Domain Wall Fidelity Lengths Using a Chirality Filter

Lewis, E. R., Petit, D., Jausovec, A. V., O'Brien, L., Read, Daniel ORCID: https://orcid.org/0000-0002-4178-4986, Zeng, H. T. and Cowburn, R. P. 2009. Measuring Domain Wall Fidelity Lengths Using a Chirality Filter. Physical Review Letters 102 (5) , 057209. 10.1103/PhysRevLett.102.057209

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Abstract

The motion of transverse domain walls (DWs) in thin Permalloy nanowires has been studied by locally detecting the chirality of the moving DW, using a cross-shaped trap acting as a chirality filter. We find that structural changes of the DW occur over a characteristic minimum distance: the “DW fidelity length.” The measured field dependence of the fidelity length is in good qualitative agreement with a 1D analytical model and with published results of numerical simulations and experiments. We also demonstrate extension of the fidelity length to meter length scales using a series of filters.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	American Physical Society
ISSN:	0031-9007
Last Modified:	16 May 2023 20:24
URI:	https://orca.cardiff.ac.uk/id/eprint/7219

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