Magnonic band spectrum of spin waves in an elliptical helix

Golovchan, A. V.; Kruglyak, V. V.; Tkachenko, V. S.; Kuchko, A. N.

doi:10.1098/rsos.172285

Cited by 5 publications

(2 citation statements)

References 71 publications

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“…[1][2][3] Novel physical phenomena have been found in this field based on curvature-induced effects, [4][5][6] non-collinear spin textures including Bloch points, [7] and vortex domain walls, [8] as well as fascinating spin dynamics. [9,10] DOI: 10.1002/adma.202303292 Moreover, the 3D architecture brings advanced functionalities for spintronic and magnonic devices. In spintronics, it naturally increases the storage capacity such as the 3D racetrack memory.…”

Section: Introductionmentioning

confidence: 99%

Realization and Control of Bulk and Surface Modes in 3D Nanomagnonic Networks by Additive Manufacturing of Ferromagnets

Guo,

Deenen,

et al. 2023

Advanced Materials

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The high‐density integration in information technology fuels the research on functional 3D nanodevices. Particularly ferromagnets promise multifunctional 3D devices for nonvolatile data storage, high‐speed data processing, and non‐charge‐based logic operations via spintronics and magnonics concepts. However, 3D nanofabrication of ferromagnets is extremely challenging. In this work, an additive manufacturing methodology is reported, and unprecedented 3D ferromagnetic nanonetworks with a woodpile‐structure unit cell are fabricated. The collective spin dynamics (magnons) at frequencies up to 25 GHz are investigated by Brillouin Light Scattering (BLS) microscopy and micromagnetic simulations. A clear discrepancy of about 10 GHz is found between the bulk and surface modes, which are engineered by different unit cell sizes in the Ni‐based nanonetworks. The angle‐ and spatially‐dependent modes demonstrate opportunities for multi‐frequency signal processing in 3D circuits via magnons. The developed synthesis route will allow one to create 3D magnonic crystals with chiral unit cells, which are a prerequisite toward surface modes with topologically protected properties.

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Section: Introductionmentioning

confidence: 99%

Realization and Control of Bulk and Surface Modes in 3D Nanomagnonic Networks by Additive Manufacturing of Ferromagnets

Guo,

Deenen,

et al. 2023

Advanced Materials

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“…Soliton solutions of nonlinear differential equations attract increased attention of researchers because of an increasing use in physical applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. For example, solitons of the sine-Gordon equation(the SGE) are frequently used.…”

Section: Introductionmentioning

confidence: 99%

Excitation of Large-Amplitude Localized Nonlinear Waves by the Interaction of Kinks of the Sine-Gordon Equation with Attracting Impurity

Gumerov¹,

Екомасов²,

Kudryavtsev³

et al. 2019

Nelin. Dinam.

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The generation and evolution of localized waves on an impurity in the scattering of a kink of the sine-Gordon equation are studied. It is shown that the problem can be considered as excitation of oscillations of a harmonic oscillator by a short external impulse. The external impulse is modeled by the scattering of a kink on an impurity. The influence of the modes of motion of a kink on the excitation energy of localized waves is numerically and analytically studied. The method of collective coordinate for the analytical study is used. The value of this energy is determined by the ratio of the impurity parameters and the initial kink velocity. It is shown that the dependence of the energy (and amplitude) of the generated localized waves

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