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- W2918148752 abstract "We demonstrate laser-induced nonreciprocity of spin waves in the ferromagnetic-semiconductor structure. Surface spin waves in yttrium iron garnet film grown at the top of $n$-type gallium arsenide substrate were studied by means of Brillouin light-scattering spectroscopy. It is shown that spin-wave dispersion can be modified in a controlled manner by laser radiation. We observe the difference of up to 225 MHz when comparing the frequencies of counterpropagating spin waves. We attribute this frequency shift to the mutual influence of nonreciprocal spin-wave modal profiles and differences in magnetic anisotropies at two film surfaces as the result of laser-induced conductivity variation in GaAs substrate. We propose a simple model based on analytical dipole theory to describe the induced spin-wave nonreciprocity. Our results show the possibility of integration of magnonics and semiconductor electronics on the base of YIG/GaAs structures." @default.
- W2918148752 created "2019-03-02" @default.
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- W2918148752 date "2019-02-21" @default.
- W2918148752 modified "2023-10-13" @default.
- W2918148752 title "Route toward semiconductor magnonics: Light-induced spin-wave nonreciprocity in a YIG/GaAs structure" @default.
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- W2918148752 doi "https://doi.org/10.1103/physrevb.99.054424" @default.
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