Spin-wave interference in magnetic vortex stacks

Behncke, Carolin; Adolff, Christian F.; Lenzing, Nicolas; Hänze, Max; Schulte, B.; Weigand, Markus; Schütz, Gisela; Meier, Guido

doi:10.1038/s42005-018-0052-1

Cited by 29 publications

(15 citation statements)

References 27 publications

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“…It has been shown that local magnetic formations such as domain walls [45][46][47], edge bound demagnetizing fields [33,48,49], or vortices [23,24,50] can function as spin wave emitters offering effective "antenna" widths well below 200 nm. A major advantage of this approach is that the devices providing such formations are a lot larger than these effective widths.…”

Section: Resultsmentioning

confidence: 99%

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Direct observation of coherent magnons with suboptical wavelengths in a single-crystalline ferrimagnetic insulator

et al. 2019

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Section: Resultsmentioning

confidence: 99%

“…Refs. [23,24,50]). As this measurement, again, combines signals from the YIG and the Permalloy, to make sure that the radial waves and the implied vortex are indeed in the YIG film, a second measurement at the same frequency was conducted at the L 3 edge of nickel.…”

Section: Resultsmentioning

confidence: 99%

Direct observation of coherent magnons with suboptical wavelengths in a single-crystalline ferrimagnetic insulator

et al. 2019

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“…Recently, nanoscale spin textures in magnetic materials have gained attention for their potential as functional elements in spin‐wave devices. In particular, spin‐wave guiding, generation, and tunable transmission were observed at naturally occurring spin textures such as vortices and domain walls.…”

mentioning

confidence: 99%

Optically Inspired Nanomagnonics with Nonreciprocal Spin Waves in Synthetic Antiferromagnets

et al. 2020

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Integrated optically inspired wave‐based processing is envisioned to outperform digital architectures in specific tasks, such as image processing and speech recognition. In this view, spin waves represent a promising route due to their nanoscale wavelength in the gigahertz frequency range and rich phenomenology. Here, a versatile, optically inspired platform using spin waves is realized, demonstrating the wavefront engineering, focusing, and robust interference of spin waves with nanoscale wavelength. In particular, magnonic nanoantennas based on tailored spin textures are used for launching spatially shaped coherent wavefronts, diffraction‐limited spin‐wave beams, and generating robust multi‐beam interference patterns, which spatially extend for several times the spin‐wave wavelength. Furthermore, it is shown that intriguing features, such as resilience to back reflection, naturally arise from the spin‐wave nonreciprocity in synthetic antiferromagnets, preserving the high quality of the interference patterns from spurious counterpropagating modes. This work represents a fundamental step toward the realization of nanoscale optically inspired devices based on spin waves.

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“…When two ferromagnetic disks are overlapped, spin waves emitted from the vortex cores can generate interference patterns as studied by Behncke and coworkers [425]. The static magnetic state is shown in the bottom panel of Fig.…”

Section: Short-wavelength Spin Waves In Magnetic Vorticesmentioning

confidence: 86%

Magnetic texture based magnonics

Yu,

Xiao,

Schultheiss

2020

Preprint

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The spontaneous magnetic orders arising in ferro-, ferri-and antiferromagnets stem from various magnetic interactions. Depending on the interplay and competition among the Heisenberg exchange interaction, Dzyaloshinskii-Moriya exchange interaction, magnetic dipolar interaction and crystal anisotropies, a great variety of magnetic textures may be stabilized, such as magnetic domain walls, vortices, Skyrmions and spiral helical structures.While each of these spin textures responds to external forces in a specific manner with characteristic resonance frequencies, they also interact with magnons, the fundamental collective excitation of the magnetic order, which can propagate in magnetic materials free of charge transport and therefore with low energy dissipation.Recent theories and experiments found that the interplay between spin waves and magnetic textures is particularly interesting and rich in physics. In this review, we introduce and discuss the theoretical framework of magnons living on a magnetic texture background, as well as recent experimental progress in the manipulation of magnons via magnetic textures. The flexibility and reconfigurability of magnetic textures are discussed regarding the potential for applications in information processing schemes based on magnons.

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Spin-wave interference in magnetic vortex stacks

Cited by 29 publications

References 27 publications

Direct observation of coherent magnons with suboptical wavelengths in a single-crystalline ferrimagnetic insulator

Direct observation of coherent magnons with suboptical wavelengths in a single-crystalline ferrimagnetic insulator

Optically Inspired Nanomagnonics with Nonreciprocal Spin Waves in Synthetic Antiferromagnets

Magnetic texture based magnonics

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