Prediction of topological Hall effect in a driven magnetic domain wall

Abstract

We investigate the possible emergence of topological Hall effect (THE) in a driven magnetic DW. Numerical simulation based on the Landau-Lifshitz-Gilbert-Slonczewski (LLGS) equation shows that the emergent magnetic flux appears when the DW is in a non-equilibrium state. The magnitude of magnetic flux is modulated by Dzyaloshinskii-Moriya interaction (DMI) or in-plane longitudinal magnetic field, providing an experimental test of the predicted THE. These results indicate that the THE can be observed even in a topologically trivial magnetic DW, and therefore open up new possibility to electrically detect the dynamical spin structure.

12 pages, 3 figures

References in corpus (5)

• Interface-driven topological Hall effect in SrRuO${}_3$-SrIrO${}_3$ bilayer
• Dimensional Crossover Induced Topological Hall Effect in a Magnetic Topological Insulator
• Chirality induced anomalous-Hall effect in helical spin crystals
• Spin torque and force due to current for general spin textures
• Topological Hall and Spin Hall Effects in Disordered Skyrmionic Textures

Cited by in corpus (1)

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