"Topological" Hall effect in the ferromagnetic microparticles with noncoplanar magnetization distribution

Details "Topological" Hall effect in the ferromagnetic microparticles with noncoplanar magnetization distribution "Topological" Hall effect in the ferromagnetic microparticles with noncoplanar magnetization distribution

2009-07-10

arxiv.org/abs/0907.1808v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

The phenomenological theory for "topological" Hall effect (THE) is proposed. The theory can be used for qualitative analysis of THE in the medium with arbitrary magnetization distribution. In the paper the cylindrical particle with "vortex" magnetization is considered. The hysteresis loop of THE is qualitatively different comparing to abnormal Hall effect. The estimation of THE magnitude in the "vortex" particle is made. For Co particle with 100 nm diameter the THE exceeds normal and abnormal Hall effects until an external magnetic field less than 200 Oe.

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