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Chiral symmetry breaking and pair-creation mediated Walker breakdown in magnetic nanotubes
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Simulated configuration of a vortex-like DW formed in a magnetic nanotube and the definition of its chirality by combining vorticity and field direction. (b) The unrolled tube with the DW. The red line is the plot of the radial component averaged over each cross-section. (c) For comparison, a transverse DW in a flat strip.

Image of FIG. 2.
FIG. 2.

Comparison of the DW dynamics between the LH chirality case (red) and the RH one (blue). (a) Plot of the averaged radial component () of the static DW and two moving DWs. The driving field is 1 mT. (b) Average DW velocity as a function of field in the low-field regime. (c) DW displacement as a function of time driven by two different fields.

Image of FIG. 3.
FIG. 3.

Snapshots of simulated DW configuration (a) before, (b) during, and (c) after the breakdown process. The magnetic structure is visualized on a flat surface by graphically unrolling the tube onto a strip. The magnetization direction is indicated by the color coding (azimuthal component) and the white arrows. In (b), only the bottom surface and the lateral edges of the strip are shown. Three isosurfaces are utilized to locate the (anti)vortex cores.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Chiral symmetry breaking and pair-creation mediated Walker breakdown in magnetic nanotubes