| Issue |
EPJ Web Conf.
Volume 244, 2020
Complexity and Disorder Meetings 2018-2019-2020
|
|
|---|---|---|
| Article Number | 01014 | |
| Number of page(s) | 10 | |
| DOI | https://doi.org/10.1051/epjconf/202024401014 | |
| Published online | 15 October 2020 | |
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
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