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

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2014
Major/Subject
Mcode
Degree programme
Language
en
Pages
1-5
Series
PHYSICAL REVIEW B, Volume 89, issue 6
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.
Description
Keywords
Disorder, Domain wall, Nanowire
Other note
Citation
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 , vol. 89 , no. 6 , 064419 , pp. 1-5 . https://doi.org/10.1103/PhysRevB.89.064419