Dr. Abdulkarim A. Amirov Profile

Dr. Abdulkarim A. Amirov

at Immanuel Kant Baltic Federal Univ.

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Proceedings Article | 4 May 2021 Paper

Directional control of spin-wave transport in tunable spin-photonic YIG/Fe-Rh bilayer structure for signal processing

S. Odintsov, E. Salomatova, A. Kamantsev, A. Amirov, V. Rodionova, S. Sheshukova, A. Sadovnikov

Proceedings Volume 11847, 118470I (2021) https://doi.org/10.1117/12.2590207

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Here we report on bi-directional control of spin waves propagated in yttrium iron garnet (YIG) waveguide with Fe-Rh stripe placed on top of the central part of YIG. We use the micromagnetic numerical simulation to investigate spin-wave transport in multimode regime by the numerical solution of Landau-Lifshitz-Gilbert equation. Furthermore, we have explained the evolution of spin-wave signal in the proposed structure by means of 2D Fourier analysis revealing the spin-wave dispersion transformation. The transformation of the spin-wave transmission spectra demonstrates that the proposed structure will enable the control of spin-wave mode propagation by varying the temperature range of Fe-Rh close to the room temperature. Furthermore, the spin-wave signal can switch back and forth via a small variation of the temperature in Fe-Rh slab provided by the means of laser radiation. Analysis of those spectra revealed that YIG/Fe-Rh bilayer structure can be used as a functional unit in planar magnonic networks performing the spatio-frequency demultiplexing and spin-wave mode filtration regime.

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