Berlin 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 57: Focus Session: Spinorbitronics – from efficient charge/spin conversion based on spin-orbit coupling to chiral magnetic skyrmions III (joint session MA/TT)
MA 57.2: Vortrag
Freitag, 16. März 2018, 10:00–10:15, H 1012
anisotropic DMI and micromagnetics of antiskyrmions — •Lorenzo Camosi1, Olivier Fruchart2, Stefania Pizzini1, Stanislas Rohar3, and Jan Vogel1 — 1Institut Néel , CNRS , Grenoble, France — 2INAC-SPINTEC, CNRS, CEA, Grenoble, France — 3LPS , CNRS , Orsay , France
A review of our pioneer works for understanding the Antiskyrmions physics in ultrathin magnetic layers is presented. They are topological chiral solitons that may be stabilized when the circular symmetry of the spin configuration is broken due to the inversion of the chirality between perpendicular directions.
In the first part of the talk we explain the relationship between crystal and Dzyaloshinskii-Moriya interaction (DMI)symmetry. Moreover the particular case of anisotropic dmi in ultrathin epitaxial Au/Co/W(110) is presented.
In the second part we show a combined analytical and numerical micromagnetic study of the equilibrium energy, size and shape of anti-skyrmionic magnetic configurations. Anti-skyrmions and skyrmions are compared in systems with the same strength of magnetic interactions. We show that in the presence of dipolar interaction energy of the anti-skyrmion is strongly reduced and its equilibrium size increased with respect to the skyrmion.