https://doi.org/10.1051/epjconf/202024401014
Vortex lines in a cubic magnetic nanodot: structure and dynamics
1
Institut des NanoSciences de Paris (INSP), Sorbonne Universit´e, CNRS-UMR 7588, 75005 Paris, France
2
MPQ, UMR CNRS 7162, Universit´e Paris Diderot, Universit´e de Paris, 75013 Paris France
* Contact: depondt@insp.jussieu.fr
Published online: 15 October 2020
Langevin simulations of cubic magnetic nanodots were performed using the Landau-Lifshitz equation with exchange and dipolar interactions. Vortices tend to organize as lines: we establish the structure and dynamics thereof for a large range of the dipolar versus exchange ratio d. These lines tend to be bent and twisted. For large values of the dipolar interaction, a complex network of vortex lines arises. Dynamics evidences low frequency collective gyrotropic motions of vortex lines which maintain their distance during motion.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
