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Spin Waves Interference under Excitation by Focusing Transducers: Logic and Signal Processing

  • XXVIII INTERNATIONAL SYMPOSIUM “NANOSTRUCTURES: PHYSICS AND TECHNOLOGY”, MINSK, REPUBLIC OF BELARUS, SEPTEMBER, 2020. SPIN RELATED PHENOMENA IN NANOSTRUCTURES
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Abstract

Micro-focused Brillouin–Mandelstam light scattering technique and micromagnetic simulations were used to study surface (SSW) and backward volume (BVSW) spin waves (SW) interference under excitation by curvilinear focusing transducers placed oppositely to each other on a top of a tangentially magnetized yttrium iron garnet (YIG) film. It is shown that due to anisotropic propagation, the 2D interference patterns for both SSW and BVSW focused beams are nonreciprocal. Due to chromatic aberration and caustics formation of the focusing transducers, the interference pattern of the focused SW beams depends on the excitation frequency and is sensitive to local nonuniformities in the YIG film. The obtained results demonstrate the possibility to use curvilinear SW focusing transducers for information technologies based on magnonic optics.

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Funding

The work of Y. Khivintsev, G. Dudko, A. Kozhevnikov, V. Sakharov and Y. Filimonov was supported by Russian Science Foundation grant no. 17-19-01673.

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Authors and Affiliations

  1. Dipartimento di Fisica e Geologia, Università di Perugia, via A. Pascoli, I-06123, Perugia, Italy

    M. Madami

  2. Istituto Officina dei Materiali del CNR (CNR-IOM), sede secondaria di Perugia, c/o Dipartimento di Fisica e Geologia, Università di Perugia, I-06123, Perugia, Italy

    G. Gubbiotti

  3. Kotelnikov Institute of Radioengineering and Electronics, Saratov Branch, Saratov, Russia

    Y. V. Khivintsev, G. M. Dudko, V. K. Sakharov, A. V. Kozhevnikov & Y. A. Filimonov

  4. Chernyshevsky Saratov State University, Saratov, Russia

    Y. V. Khivintsev & Y. A. Filimonov

  5. Yuri Gagarin State Technical University of Saratov, Saratov, Russia

    Y. A. Filimonov

  6. University of California-Riverside, Riverside, 92521, California, USA

    A. G. Khitun

Authors
  1. M. Madami
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  2. G. Gubbiotti
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  3. Y. V. Khivintsev
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  4. G. M. Dudko
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  5. V. K. Sakharov
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  6. A. V. Kozhevnikov
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  7. Y. A. Filimonov
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  8. A. G. Khitun
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Corresponding authors

Correspondence to M. Madami, G. Gubbiotti, Y. V. Khivintsev, G. M. Dudko, V. K. Sakharov, A. V. Kozhevnikov, Y. A. Filimonov or A. G. Khitun.

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Madami, M., Gubbiotti, G., Khivintsev, Y.V. et al. Spin Waves Interference under Excitation by Focusing Transducers: Logic and Signal Processing. Semiconductors 54, 1716–1720 (2020). https://doi.org/10.1134/S1063782620120192

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  • DOI: https://doi.org/10.1134/S1063782620120192

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