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Information × Registration Number 0221U101221, 0118U004007 , R & D reports Title Spin dynamics in magneto-ordered materials with metasurfaces" popup.stage_title Head Gorobets Yuryi I., Registration Date 18-01-2021 Organization Institute of Magnetism NAS of Ukraine and MES 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 possibility of obtaining configurations with arbitrary helicity is revealed. 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. A general theory of linear magnetoelastic coupling between spin and acoustic waves propagating in an arbitrary magnetic–non-magnetic layered structure and having arbitrary profiles has been developed. It is shown that the spin wave non-reciprocity caused by the Dzyaloshinskii–Moriya interfacial interaction can be “transferred” to hybridized surface acoustic waves in piezoelectric–ferromagnet–heavy metal heterostructures. The methods of realization of non-reciprocal propagation of surface acoustic waves in a giant frequency band and phase non-reciprocity of surface acoustic waves by means of their interaction with spin waves in synthetic antiferromagnet are proposed. Generalized boundary conditions at the interface between the ferro- and antiferromagnet are deduced, taking into account the energies of homogeneous and inhomogeneous exchange. An analytical model of the space-dependent frequency of ferromagnetic resonance in a perpendicularly magnetized thin film with an antidote is developed. The winding number, topological charge and Hopf index for a special class of 3D exact solutions of the Landau–Lifshitz equations in a uniaxial two-lattice antiferromagnet with the Dzyaloshinskii–Moriya interaction were calculated. It is proposed a method of increasing the size of the core of a spin Hall oscillator, in which single-mode generation can occur. Th  Product Description popup.authors Ivanov Boris O. Verba Roman V Gerasimchuk Igor V. Gorobets Oksana Yu. Kuchko Anatoliy M. popup.nrat_date 2021-01-18 Close