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Dynamic propagation and nucleation in domain wall nanowire devices

O'Brien, L., Read, Daniel, 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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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: 04 Jun 2017 03:05

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