Magnetic domain wall propagation in a submicron spin-valve stripe: influence of the pinned layer

Details Magnetic domain wall propagation in a submicron spin-valve stripe: influence of the pinned layer Magnetic domain wall propagation in a submicron spin-valve stripe: influence of the pinned layer

2008-01-07

arxiv.org/abs/0801.0781v1

Applied Physics Letters 92 (2008) 032508

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.2835201

The propagation of a domain wall in a submicron ferromagnetic spin-valve stripe is investigated using giant magnetoresistance. A notch in the stripe efficiently traps an injected wall stopping the domain propagation. The authors show that the magnetic field at which the wall is depinned displays a stochastic nature. Moreover, the depinning statistics are significantly different for head to head and tail-to-tail domain walls. This is attributed to the dipolar field generated in the vicinity of the notch by the pinned layer of the spin-valve.

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