Generation of propagating spin waves from regions of increased dynamic demagnetising field near magnetic antidots

Davies, C. S.; Садовников, А. В.; Гришин, С. В.; Sharaevskiĭ, Yu. P.; Никитов, С. А.; Kruglyak, V. V.

doi:10.1063/1.4933263

Cited by 48 publications

(42 citation statements)

References 54 publications

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“…As in Ref. [14], the large size of the supercell allowed us to assume the antidot was in isolation. The sample was discretized into 5 × 5 nm 2 mesh cells in the YZ plane, with no discretization across the sample thickness.…”

Section: Methodsmentioning

confidence: 99%

“…So, the spin waves observed in Ref. [14] formed spin-wave caustic beams [16]. It is well-known however that the magneto-dipole interaction only dominates at the long-wavelength limit.…”

Section: Introductionmentioning

confidence: 99%

“…[14], the relatively large thickness of the YIG film (10 μm) and the macroscopic diameter of the antidot (100 μm) led to the magneto-dipole interaction dominating the observed magnetization dynamics. So, the spin waves observed in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…This raises the question of how the character of spin waves excited using the method from Ref. [14] changes upon down-sizing the sample.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we demonstrated [14] that an isolated magnetic antidot patterned in an otherwise continuous magnetized film of Yttrium-IronGarnet (YIG) creates regions of increased (both static and dynamic) demagnetizing field in its vicinity, relative to that in the continuous film. As a result, upon exciting the whole sample with a microwave magnetic field tuned in frequency so as to resonantly couple [15] only to the regions of the increased demagnetizing field, the latter regions acted as emitters of propagating spin waves.…”

Section: Introductionmentioning

confidence: 99%

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Generation of Propagating Spin Waves From Edges of Magnetic Nanostructures Pumped by Uniform Microwave Magnetic Field

Davies

Kruglyak

2016

IEEE Trans. Magn.

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Thin-film patterned magnetic nanostructures are widely employed within perceived magnonic device architectures to guide and / or manipulate spin waves for data processing and communication purposes. Here, using micromagnetic simulations, we explore how the internal magnetic field non-uniformity inherent to patterned magnetic nanostructures can also be exploited to create spin-wave sources. The spin-wave emission is achieved through the resonant excitation of finite sized regions of increased effective magnetic field formed near the edges of patterned structures. The phenomenon is rather universal and could be used to generate magneto-dipole, dipole-exchange and exchange dominated spin waves. Depending on the frequency of excitation and parameters of the nanostructures the emitted spin waves may form either highly-directional spin-wave caustic beams or more regular plane spin waves.

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Section: Methodsmentioning

confidence: 99%

“…So, the spin waves observed in Ref. [14] formed spin-wave caustic beams [16]. It is well-known however that the magneto-dipole interaction only dominates at the long-wavelength limit.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…This raises the question of how the character of spin waves excited using the method from Ref. [14] changes upon down-sizing the sample.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Generation of Propagating Spin Waves From Edges of Magnetic Nanostructures Pumped by Uniform Microwave Magnetic Field

Davies

Kruglyak

2016

IEEE Trans. Magn.

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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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Synthesis and luminescence properties of Sr2−xY x Si5−xAl x N8:Eu2+ red phosphor for white light-emitting diodes

et al. 2018

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Generation of propagating spin waves from regions of increased dynamic demagnetising field near magnetic antidots

Abstract: Articles you may be interested in An antidot array as an edge for total non-reflection of spin waves in yttrium iron garnet films Appl. Phys. Lett.

Cited by 48 publications

References 54 publications

Generation of Propagating Spin Waves From Edges of Magnetic Nanostructures Pumped by Uniform Microwave Magnetic Field

Generation of Propagating Spin Waves From Edges of Magnetic Nanostructures Pumped by Uniform Microwave Magnetic Field

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

Synthesis and luminescence properties of Sr2−xY x Si5−xAl x N8:Eu2+ red phosphor for white light-emitting diodes

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