High efficiency domain wall gate in ferromagnetic nanowires

Petit, Dorothee, Jausovec, Ana-Vanessa, Zeng, Huang T., Lewis, Emma, O'Brien, Liam, Read, Daniel ORCID: https://orcid.org/0000-0002-4178-4986 and Cowburn, Russell P. 2008. High efficiency domain wall gate in ferromagnetic nanowires. Applied Physics Letters 93 (16) , 163108. 10.1063/1.3005586

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Abstract

A transverse domain wall (DW) switchable gate with a very high efficiency is experimentally demonstrated in Permalloy nanowires using a transverse T-shaped structure. DWs are found to either travel undisturbed through the open gate or to be strongly trapped in front of the closed gate only able to travel backwards. The opening and closing of the gate depends on the magnetic configuration of the gate and is controlled using externally applied magnetic fields. Micromagnetic simulations confirm the experimental results.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Uncontrolled Keywords:	ferromagnetic materials, magnetic domain walls, micromagnetics, nanowires, Permalloy
Additional Information:	3 pp.
Publisher:	American Institute of Physics
ISSN:	0003-6951
Last Modified:	15 May 2023 17:21
URI:	https://orca.cardiff.ac.uk/id/eprint/17415

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