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Current-induced magnetization switching in asymmetric necked wires

Lepadatu, S., Wu, J. and Xu, Y.B. (2007) Current-induced magnetization switching in asymmetric necked wires. Applied Physics Letters, 91 (6). Art. No. 062512. ISSN 0003-6951

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The authors have studied the current-induced domain wall movement mechanism in Ni80Fe20 wires patterned with a nanoconstriction and asymmetric arm widths using transport and focused magneto-optic Kerr effect (MOKE) measurements. Using dc current, the trapped domain wall is removed from the constriction at a current density greater than 1011 A/m2 and the direction of domain wall displacement is detected using focused MOKE measurements. At zero field, the current-induced domain wall displacement is in the direction of the current carriers while at the nucleation field of the domain wall the displacement direction is set by the direction of the applied field, independent of the current direction.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Electronics (York)
The University of York > Physics (York)
Depositing User: York RAE Import
Date Deposited: 28 Aug 2009 11:12
Last Modified: 28 Aug 2009 11:12
Published Version: http://dx.doi.org/10.1063/1.2768301
Status: Published
Publisher: American Institute of Physics
Identification Number: 10.1063/1.2768301
URI: http://eprints.whiterose.ac.uk/id/eprint/5623

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