Spin wave propagation in a uniformly biased curved magnonic waveguide

Садовников, А. В.; Davies, C. S.; Kruglyak, V. V.; Романенко, Д. В.; Grishin, S. V.; Бегинин, Е. Н.; Sharaevskiĭ, Yu. P.; Никитов, С. А.

doi:10.1103/physrevb.96.060401

Cited by 87 publications

(48 citation statements)

References 43 publications

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“…In contrast to previous works, the input waveguide is positioned on the edge of the widened area. The boundary of the magnetic structure leads to a reflection of spin‐wave energy rather than to its total absorption . Thus, the geometric confinement prevents from a splitting of the spin‐wave energy into two symmetric beams and only one caustic‐like beam occurs.…”

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confidence: 99%

Frequency‐Division Multiplexing in Magnonic Logic Networks Based on Caustic‐Like Spin‐Wave Beams

Heussner

Nabinger

Fischer

et al. 2018

Physica Rapid Research Ltrs

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Wave-based data processing by spin waves (SW) and their quanta, magnons, is a promising technique to overcome the challenges which CMOS-based logic networks are facing nowadays. The advantage of these quasi-particles lies in their potential for the realization of energy efficient devices on the micro-to nanometer scale due to their charge-less propagation in magnetic materials. In this paper, the frequency dependence of the propagation direction of caustic-like spin-wave beams in microstructured ferromagnets is studied by micromagnetic simulations. Based on the observed alteration of the propagation angle, an approach to spatially combine and separate spinwave signals of different frequencies is demonstrated. The presented magnetic structure constitutes a prototype design of a passive circuit enabling frequency-division multiplexing (FDM) in magnonic logic networks. It is verified that spin-wave signals of different frequencies can be transmitted through the device simultaneously without any interaction or creation of spurious signals. Due to the wave-based approach of computing in magnonic networks, the technique of FDM can be the basis for parallel data processing in single magnonic devices, enabling the multiplication of the data throughput.Multiplexing is a widely used technique of data transmission in telecommunication or computer networks. [1] The common aim of all different realizations of this concept is to transfer multiple data signals through a shared transmission line. [2][3][4][5][6] In view of the different challenges todays CMOS technology is facing, [7] the concept of multiplexing is also very interesting for new approaches of data processing like, for example, the field of magnonics. [8][9][10][11][12][13][14] In this case, spin waves (SW) are used to transport data [15][16][17] and the information can be encoded in their amplitude or phase. [18] This approach is especially interesting since wave-based logic can be realized by utilizing interference effects [19] of the SW as has been shown by, for example, the development of the spin-wave majority gate [20,21] and other interferometer-based devices. [22,23] Aiming at an efficient signal transport in magnonic circuits, spin-wave multiplexers enabling time-division multiplexing have already been experimentally demonstrated. [24,25] In this case, the information carrying spin-wave signals are getting temporally separated, successively transferred through the shared magnonic waveguide and finally allocated to different output waveguides by the spin-wave (de-) multiplexer.In contrast, frequency-division multiplexing (FDM) enables a simultaneous transport of data. [1,26] The bandwidth of the transmission medium is divided into separated frequency channels and the data signals are simultaneously transferred at different frequencies. This approach is heavily used in a broad range of applications, from radio broadcasting and fiber optics to communication satellites. [3][4][5][6] However, since the data handling is realized by transistor-based logic elemen...

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confidence: 99%

Frequency‐Division Multiplexing in Magnonic Logic Networks Based on Caustic‐Like Spin‐Wave Beams

Heussner

Nabinger

Fischer

et al. 2018

Physica Rapid Research Ltrs

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“…Mention must be made that dipole spin wave distribution may occupy a large area compared with YIG film surface of 76 mm in diameter. Therefore, this method is appear much more effective for dipole spin waves than the similar well known method based on the Brillouin scattering of light by the spin wave [11], while the last method is widely used to study spin wave distribution in the ferrite film plane [12][13][14].…”

Section: Experimental and Calculated Resultsmentioning

confidence: 99%

Superdirected beam of the backward volume spin wave

2018

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Visualized patterns of the backward volume spin wave (BVSW) excited by arbitrarily oriented linear transducer in tangentially magnetized ferrite film are investigated experimentally in the plane of ferrite film for the case where the transducer length D is much larger than the wavelength λ0. Superdirected BVSW beam having zero angular width and minimal smearing of the beam energy along the film surface is observed experimentally. Thus, it is proved that such phenomenon as “superdirected propagation of the wave” exists in the nature.

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“…Также для указанного значения внутреннего радиуса полукольца величина δ H = = H int (ξ = 0.5) − H int (ξ = 0) имеет наибольшее значение, что обусловливает наибольшую величину диапазона перекрытия дисперсионных характеристик ПМСВ и ООМСВ[31] и, следовательно, расширяет частотный диапазон, в котором достигается эффективная передача мощности СВ в плоскость S 2 .Для определения характеристик спин-волнового транспорта в рассматриваемой структуре следом за расчетом распределения статической намагниченности решалась задача о возбуждении и распространении ПМ-СВ в области подводящего волновода и далее трансформации спин-волнового сигнала в области нерегулярной структуры -микроволновода в виде полукольца. Стоит отметить, что в данной структуре в отличие от связанных волноводов[32] " провисающие" динамические магнитные поля подводящих микроволноводов не вза-Журнал технической физики, 2019, том 89, вып. Мощность спин-волнового сигнала в сечениях S 1 и S 2 в полукольцевом магнонном микроволноводе радиусом r = 2w (а); пространственное распределение интенсивности СВ на частоте f = 5.24 GHz (квадрат на рис 4,.…”

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Управление Свойствами Спин-Волнового Транспорта В Полукольцевом Магнонном Микроволноводе

Губанов¹,

Мартышкин²,

Шешукова³

et al. 2019

Журнал Технической Физики

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Spin-wave transport along a waveguide structure with disturbed translational symmetry has been investigated. A semiring portion of a magnon microwaveguide has been made of a YIG film. It has been shown that one can control the dynamic magnetization spatial distribution by varying the magnetic biasing angle in the microwaveguide plane. Under such conditions, the transmission coefficient of standing waves changes noticeably. The structure suggested in this paper allows the rotation of spin-wave signals in an irregular configuration under the conditions of surface magnetostatic wave propagation. This effect may be used in planar magnon networks.

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Spin wave propagation in a uniformly biased curved magnonic waveguide

Cited by 87 publications

References 43 publications

Frequency‐Division Multiplexing in Magnonic Logic Networks Based on Caustic‐Like Spin‐Wave Beams

Frequency‐Division Multiplexing in Magnonic Logic Networks Based on Caustic‐Like Spin‐Wave Beams

Superdirected beam of the backward volume spin wave

Управление Свойствами Спин-Волнового Транспорта В Полукольцевом Магнонном Микроволноводе

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