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Article overview
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The influence of disorder on vortex domain wall dynamics in magnetic nanowires | | J. Leliaert
; B. Van de Wiele
; A. Vansteenkiste
; L. Laurson
; G. Durin
; L. Dupré
; B. Van Waeyenberge
; | | Date: |
4 Jun 2013 | | Abstract: | Many future spintronic devices are based on the current-controlled movement
of magnetic domain walls through nanowires. Consequently a thorough
understanding of the domain wall mobility is required. However, today’s debate
is still ongoing on the nature and magnitude of the non-adiabatic component of
the spin transfer torque driving the domain wall. Various experimental methods
give rise to a large range of magnitudes for the degree of non-adiabaticity.
Strikingly, experiments based on domain wall movement in magnetic nanowires
consistently result in lower values compared to other methods. Based on
micromagnetic simulations presented in this work, we can attribute this to the
influence of distributed disorder which affects the (vortex) domain wall
mobility vastly, but is most often not taken into account in the theoretical
models adopted to extract the degree of non-adiabaticity. | | Source: | arXiv, 1306.0681 | | Services: | Forum | Review | PDF | Favorites | |
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