Dispersion and polarization characteristics of waveguide modes of exchange spin waves in epitaxial YIG films

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The properties of exchange spin waves (ESW) in epitaxial films of yttrium iron garnet (YIG) are investigated in this paper. A comprehensive analysis of the peculiarities of excitation, propagation, and interaction of ESW is carried out, taking into account their anisotropic properties. A methodology for calculating the dispersion and energy characteristics of waveguide modes of ESW for various directions of wave propagation in tangentially magnetized YIG films is proposed. It is established that the presence of both elliptical and linear polarization of precession waves leads to the deformation of the trajectory of the magnetization precession vector and a change in the orientation of the symmetry axes of the elliptical trajectory. Good agreement between the calculated and measured characteristics of ESW has been experimentally confirmed. The obtained results allow for the creation of new types of functional devices for information transmission, storage, and processing based on short-wavelength exchange spin waves.

Sobre autores

A. Ptashenko

Saratov National Research State University named after N.G. Chernyshevsky

Email: andrey.po3@mail.ru
Astrakhanskaya Str., 83, Saratov, 410012 Russian Federation

V. Tikhonov

Saratov National Research State University named after N.G. Chernyshevsky

Email: andrey.po3@mail.ru
Astrakhanskaya Str., 83, Saratov, 410012 Russian Federation

A. Sadovnikov

Saratov National Research State University named after N.G. Chernyshevsky

Autor responsável pela correspondência
Email: andrey.po3@mail.ru
Astrakhanskaya Str., 83, Saratov, 410012 Russian Federation

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