[Back]


Publications in Scientific Journals:

E. Davoli, G. Di Fratta, D. Praetorius, M. Ruggeri:
"Micromagnetics of thin films in the presence of Dzyaloshinskii-Moriya interaction";
Mathematical Models & Methods in Applied Sciences, 32 (2022), 5; 911 - 939.



English abstract:
In this paper, we study the thin-film limit of the micromagnetic energy functional in the presence of bulk Dzyaloshinskii-Moriya interaction (DMI). Our analysis includes both a stationary Gamma-convergence result for the micromagnetic energy, as well as the identification of the asymptotic behavior of the associated Landau-Lifshitz-Gilbert equation. In particular, we prove that, in the limiting model, part of the DMI term behaves like the projection of the magnetic moment onto the normal to the film, contributing this way to an increase in the shape anisotropy arising from the magnetostatic self-energy. Finally, we discuss a convergent finite element approach for the approximation of the time-dependent case and use it to numerically compare the original three-dimensional model with the two-dimensional thin-film limit.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1142/S0218202522500208


Created from the Publication Database of the Vienna University of Technology.