"Физика и техника полупроводников"
Вышедшие номера
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
2Istituto 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.

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.

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