Interlayer formation of collimated spin-wave beams
S.A. Odintsov1, S.E. Sheshukova1, S.A. Nikitov2 and A.V. Sadovnikov1
1 Saratov State University, Saratov, Russia 2 Kotel’nikov Institute of Radioengineering and Electronics, Moscow, Russia
Abstract
This work shows the results of an experimental and numerical study of the spin waves propagation in a multilayer in-plane magnetized magnonic-crystal structure, which consists of two layers of yttrium iron garnet (YIG) films located one above the other. Each layer has a lateral system of spin-waveguide channels separated by an array of grooves in the form of 1D magnonic crystal on the surface of YIG. The regimes of frequency-selective signal separation inside separate channels in either bottom or upper layer have been demonstrated using the Brillouin light scattering and microwave spectroscopy. The simultaneous effect of magnonic band gap formation and dipolar coupling of propagated spin waves reveals itself in the collimated spin-wave beam formation and propagation
along one of the four channels. This mechanism has been investigated using the numerical simulation based on electrodynamic 3D model and micromagnetic simulation. It is shown that the proposed method of spin-wave transport control can find application in the fabrication of magnonic logic elements based on the principles of spatial-frequency selection of a microwave signal in multilayer topologies of magnonic networks.
Supported by RSF # 20-79-10191
Speaker
Sergey Odintsov
Saratov State University
Russia
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