We study both experimentally and theoretically the driven motion of domain walls in extended amorphous magnetic films patterned with a periodic array of asymmetric holes. We find two crossed ratchet effects of opposite sign that change the preferred sense for domain wall propagation, depending on whether a flat or a kinked wall is moving. By solving numerically a simple ϕ4-model we show that the essential physical ingredients for this effect are quite generic and could be realized in other experimental systems involving elastic interfaces moving in multidimensional ratchet potentials.
@article{arxiv.0709.0189,
title = {Crossed ratchet effects for magnetic domain wall motion},
author = {A. Perez-Junquera and V. I. Marconi and A. B. Kolton and L. M. Alvarez-Prado and Y. Souche and A. Alija and M. Velez and J. V. Anguita and J. M. Alameda and J. I. Martin and J. M. R. Parrondo},
journal= {arXiv preprint arXiv:0709.0189},
year = {2013}
}