Influence of material defects on current-driven vortex domain wall mobility

Jonathan Leliaert, B. Van de Wiele, A. Vansteenkiste, L. Laurson, G. Durin, L. Dupre, B. Van Waeyenberge

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20 Citations (Scopus)
120 Downloads (Pure)

Abstract

Many future concepts for spintronic devices are based on the current-driven motion of magnetic domain walls through nanowires. Consequently a thorough understanding of the domain wall mobility is required. However, the magnitude of the nonadiabatic component of the spin-transfer torque driving the domain wall is still debated today as various experimental methods give rise to a large range of values for the degree of nonadiabaticity. Strikingly, experiments based on vortex domain wall motion in magnetic nanowires consistently result in lower values compared to other methods. Based on the micromagnetic simulations presented in this contribution we can attribute this discrepancy to the influence of distributed disorder which vastly affects the vortex domain wall mobility, but is most often not taken into account in the models adopted to extract the degree of nonadiabaticity.
Original languageEnglish
Article number064419
Pages (from-to)1-5
JournalPhysical Review B
Volume89
Issue number6
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Keywords

  • Disorder
  • Domain wall
  • Nanowire

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    Leliaert, J., Van de Wiele, B., Vansteenkiste, A., Laurson, L., Durin, G., Dupre, L., & Van Waeyenberge, B. (2014). Influence of material defects on current-driven vortex domain wall mobility. Physical Review B, 89(6), 1-5. [064419]. https://doi.org/10.1103/PhysRevB.89.064419