Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 41: Magnetic Textures: Statics and Imaging II

MA 41.10: Vortrag

Donnerstag, 4. April 2019, 12:00–12:15, H37

Skyrmions in 2D chiral magnets stabilized by tilted magnetic field — •Vladyslav Kuchkin¹, Filipp Rybakov², Stefan Blügel¹, and Nikolai Kiselev¹ — ¹Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany — ²Department of Physics, KTH-Royal Institute of Technology, SE-10691 Stockholm, Sweden

Chiral magnets are known to host a variety of different nontrivial localized magnetization configurations possessing particle-like properties, which can be effectively manipulated by various external stimuli. The corresponding model Hamiltonian contains contributions of Heisenberg exchange, Dzyaloshinskii-Moriya interaction and Zeeman energy. In the current work, we consider 2D chiral magnets in the presence of tilted magnetic fields. Using the micromagnetic approximation allows reducing the problem to the system of partial differential equations, which can be analyzed with accurate analytical methods. This approach allowed us to study the long-range interaction between the skyrmions of different types and their stability as a function of the angle and strength of the tilted magnetic field. The combination of the analytical approach with numerical simulations allowed us to obtain the phase diagrams, the coexisting regions of magnetic skyrmions with different topological charges, as well as to describe the interaction potential between them. The presented results are important for both fundamental research as well as practical applications of magnetic skyrmions.