Fractional vortices and composite domain walls in flat nanomagnets

Details Fractional vortices and composite domain walls in flat nanomagnets Fractional vortices and composite domain walls in flat nanomagnets

2005-06-28

arxiv.org/abs/cond-mat/0506744v2

Phys.Rev.Lett. 95 (2005) 197204

Physics

Condensed Matter

Other Condensed Matter

Minor changes: updated references and fixed typos

Scientific paper

10.1103/PhysRevLett.95.197204

We provide a simple explanation of complex magnetic patterns observed in ferromagnetic nanostructures. To this end we identify elementary topological defects in the field of magnetization: ordinary vortices in the bulk and vortices with half-integer winding numbers confined to the edge. Domain walls found in experiments and numerical simulations in strips and rings are composite objects containing two or more of the elementary defects.

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