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Information × Registration Number 0218U100042, 0118U004007 , R & D reports Title Spin dynamics in magneto-ordered materials with metasurfaces" popup.stage_title Head Gorobets Yuriy Ivanovych, Доктор фізико-математичних наук Registration Date 19-12-2018 Organization Institute of Magnetism of the National Academy of Sciences of Ukraine and Ministry of Education and Sciences of Ukraine popup.description2  The possibility of stabilization of nanoscale topologically nontrivial magnetic configurations (vortices, skyrmions, solitons) in soft ferromagnetic films and nanodots by dipolar coupling to an antidot matrix is demonstrated. The effect of helicity variation of magnetic vortices and skyrmions, stabilized by radial stray fields, and the possibility to stabilize states with an arbitrary helicity are shown; theory of the transition from radial state to state with intermediate helicity is developed. Nonlinear dynamics of antiferromagnet is considered from unified view based on sigma-model for Neel vector. The effects of dynamic symmetry reduction of antiferromagnet due to the violation of Lorentz invariants of the sigma model in the presence of Dzyaloshinskii-Moriya interaction and/or high magnetic field are analyzed. Product Description popup.authors popup.nrat_date 2020-04-02 Close