Dynamics of current-driven magnetic domain walls and skyrmions
I. Purnama
- 01 Jan 2015
TL;DR: In this paper, the authors propose a method to solve the problem of homonymity in homonym identification, i.e., "homonymity-based homonymization".
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Citations
•Journal Article
Universal current-velocity relation of skyrmion motion in chiral magnets
TL;DR: A numerical simulation of Landau-Lifshitz-Gilbert equation reveals a remarkably robust and universal current-velocity relation of the skyrmion motion driven by the spin-transfer-torque unaffected by either impurities or nonadiabatic effect in sharp contrast to the case of domain wall or spin helix.
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•Journal Article
Fractional vortices and composite domain walls in flat nanomagnets
Oleg Tchernyshyov,Gia-Wei Chern +1 more
TL;DR: An explanation of complex magnetic patterns observed in ferromagnetic nanostructures is provided and elementary topological defects in the field of magnetization are identified: ordinary vortices in the bulk and vorts with half-integer winding numbers confined to the edge.
•Journal Article
Extended skyrmion phase in epitaxial FeGe(111) thin films
TL;DR: In this article, the authors extended the topological Hall effect on the Skyrmion state in epitaxial B20 FeGe(111) thin films to cover all temperatures up to the Curie temperature T(C)≈271 K and over a wide magnetic field range.
•Journal Article
Emergent Electrodynamics of Skyrmions in Chiral Magnets
TL;DR: In this article, Hall effect measurements were used to establish quantitatively the predicted emergent electrodynamics of skyrmions in chiral magnets and their depinning from impurities and their subsequent motion.
References
Robustness of topological Hall effect of nontrivial spin textures
TL;DR: The degree of robustness of the THC output in practical magnetic memories in the presence of edge and finite size effects is calculated.
Generalized analysis of thermally activated domain-wall motion in Co/Pt multilayers
TL;DR: In this paper, the authors derived a generalized Arrhenius-like equation for thermally activated domain-wall motion driven by magnetic field and electric current in out-of-plane magnetized Pt(Co/Pt) 3 multilayers.
Blowing Magnetic Skyrmion Bubbles
Wanjun Jiang,Pramey Upadhyaya,Wei Zhang,Guoqiang Yu,M. Benjamin Jungfleisch,Frank Y. Fradin,John E. Pearson,Yaroslav Tserkovnyak,Kang L. Wang,Olle Heinonen,Suzanne G. E. te Velthuis,Axel Hoffmann +11 more
TL;DR: In this article, the formation of soap bubbles from thin films is accompanied by topological transitions, and thus the natural question arises whether this concept is applicable to the generation of other topological states.
Domain wall structure in magnetic bilayers with perpendicular anisotropy
TL;DR: In this paper, the magnetic domain wall structure in magnetic bilayers with perpendicular magnetization was studied and it was shown that the classical Bloch wall observed in single layers transforms into superposed N-eel walls due to the magnetic coupling between the ferromagnetic layers.
Beating the walker limit with massless domain walls in cylindrical nanowires.
TL;DR: It is shown that the transverse domain walls forming in cylindrical Permalloy nanowires with diameters below 50 nm are zero-mass micromagnetic objects and display outstanding dynamic properties, most importantly the absence of a breakdown velocity generally known as the Walker limit.