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.
@article{arxiv.1907.01648,
title = {Prediction of topological Hall effect in a driven magnetic domain wall},
author = {Kab-Jin Kim and Masahito Mochizuki and Teruo Ono},
journal= {arXiv preprint arXiv:1907.01648},
year = {2019}
}