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Dynamic propagation and nucleation in domain wall nanowire devices

O'Brien, L., Read, Daniel ORCID: https://orcid.org/0000-0002-4178-4986, Petit, D. and Cowburn, R. P. 2012. Dynamic propagation and nucleation in domain wall nanowire devices. Journal of Physics: Condensed Matter 24 (2) , 024222. 10.1088/0953-8984/24/2/024222

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Abstract

The dynamic injection and propagation of domain walls (DWs) in technologically relevant geometries have been investigated. On short (~10 ns) timescales nucleation of a DW by a localized Oersted field is found to be well described using a Néel–Brown reversal mode. Using locally injected DWs, we test the propagation of DWs over long distances (~100 µm) in close proximity nanowires and beyond the Walker breakdown limit. In nanowires that act as true conduits to a DW, data can be successfully propagated without loss or inter-wire cross-talk. This is in contrast to poorly characterized systems where the DW is found to propagate asynchronously above the critical breakdown field.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: IOP Publishing
ISSN: 0953-8984
Last Modified: 18 Oct 2022 14:05
URI: https://orca.cardiff.ac.uk/id/eprint/16455

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