Open AccessВлияние амплитуды СВЧ-воздействия на спиновый ток границы платина/железоиттриевый гранат
Author(s) -
К.И. Константинян,
Г.А. Овсянников,
К.Л. Станкевич,
Т.А. Шайхулов,
В.А. Шмаков,
А.А. Климов
Publication year - 2021
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2021.09.51258.23h
Subject(s) - yttrium iron garnet , spin wave , condensed matter physics , magnon , magnetization , physics , phase (matter) , spin (aerodynamics) , materials science , computational physics , magnetic field , ferromagnetism , quantum mechanics , thermodynamics
A numerical study of the features of the propagation of spin waves in a waveguide made of yttrium iron garnet (YIG) and Fe-Rh alloy in the form of a plate, located on top of the central part of the YIG, is carried out. Based on the simulation results, the possibilities of controlling the dynamics of spin waves in the structure under study were also revealed. Micromagnetic numerical simulation was used to study the transfer of a spin-wave signal in a multimode mode by numerically solving the Landau – Lifshitz – Hilbert equation. Transformation of the transmission spectra of spin waves shows that the proposed structure will make it possible to control the propagation of spin-wave modes due to a sharp change in the Fe-Rh magnetization in the region of the magnetic phase transition temperature close to room temperature. In addition, the spin wave signal can be controlled by a small temperature change in the Fe-Rh plate generated by the laser radiation. The two-layer structure of YIG / Fe-Rh, from an applied point of view, can be used as a functional unit in planar magnon networks performing space-frequency demultiplexing and filtering of spin-wave modes.