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Spin waves interference under excitation by focusing transducers: logic and signal processing

Полная версия: 10.1134/S1063782620120192

Russian science foundation, 17-19-01673

Madami M. ¹, Gubbiotti G. ², Khivintsev Y.V.^3,4, Dudko G.M.³, Sakharov V.К. ³, Kozhevnikov A.V.³, Filimonov Y.A.^3,4,5, Khitun A.G.⁶

¹Dipartimento di Fisica e Geologia, Universita di Perugia, via A. Pascoli, Perugia, Italy Department of Physics and Geology, University of Perugia, Perugia, Italy

Department of Physics and Geology, University of Perugia, Perugia, Italy

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

Istituto Officina dei Materiali del CNR (CNR-IOM), sede secondaria di Perugia, c/o Dipartimento di Fisica e Geologia, Universita di Perugia, Perugia, Italy

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

⁴Chernyshevsky Saratov State University, Saratov, Russia

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

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

Email: marco.madami@unipg.it, gubbiotti@iom.cnr.it, khivintsev@gmail.com, dugal_2010@hotmail.com, valentin@sakharov.info, kzhavl@gmail.com, yuri.a.filimonov@gmail.com, akhitun@ece.ucr.edu

Поступила в редакцию: 23 июня 2020 г.

Выставление онлайн: 11 сентября 2020 г.

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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 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 excitation frequency and is sensitive to local nonuniformities in YIG film. The obtained results demonstrate the possibility to use curvilinear SW focusing transducers for information technologies based on magnonic optics. Keywords: spin waves interference, spin waves focusing transducer, logic and signal processing.

Подсчитывается количество просмотров абстрактов ("html" на диаграммах) и полных версий статей ("pdf"). Просмотры с одинаковых IP-адресов засчитываются, если происходят с интервалом не менее 2-х часов.

Дата начала обработки статистических данных - 27 января 2016 г.

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