DPG Phi
Verhandlungen
Verhandlungen
DPG

SKM 2021 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

MA: Fachverband Magnetismus

MA 17: Skyrmions II (joint session MA/KFM)

MA 17.7: Talk

Friday, October 1, 2021, 11:45–12:00, H5

Lifetimes of skyrmions and antiskyrmions in exchange frustrated films — •Moritz A. Goerzen1, Stephan von Malottki1,2, Sebastian Meyer1,4, Pavel F. Bessarab2,3, and Stefan Heinze11Institute of Theoretical Physics and Astrophysics, University of Kiel — 2University of Iceland, Reykjavík, Iceland — 3ITMO University, St. Petersburg, Russia — 4Université de Liège, Sart Tilman, Belgium

Recently, it has been shown that isolated skyrmions can be stabilized in zero magnetic field in a Rh/Co bilayer on the Ir(111) surface due to frustration of exchange interactions [1]. Here, we predict that antiskyrmions are also metastable at zero field in this film system and can co-exist with skyrmions. Based on an atomistic spin model parametrized from density functional theory [1], we calculate the lifetime of these co-existing topological states using the geodesic nudged elastic band method as well as transition state theory in harmonic approximation [2,3]. We find significant differences between the lifetimes of skyrmions and antiskyrmions due to the effect of the Dzyaloshinskii-Moriya interaction.

[1] Meyer, Perini et al., Nature Comm. 10, 3823 (2019)
[2] Bessarab et al., Sci. Rep. 8, 3433 (2018)
[3] von Malottki et al., Phys. Rev. B 99, 060409 (2019)

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2021 > SKM