Inelastic Spin‐Wave Scattering by Bloch Domain Wall Flexure Oscillations

Lyubchanskii, I.L.; Dadoenkova, Yu. S.; Krawczyk, Maciej; Guslienko, K. Yu.

doi:10.1002/pssr.201800589

Cited by 8 publications

(5 citation statements)

References 34 publications

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“…Finally, we note that the presented concept of MSW spectrum modification works near a magnetic nonuniformity with spatially varying internal fields, not only DW. However, DW position and internal structure can be controlled by external magnetic and electric [47] fields, even by propagating SW [19,48,49], opening additional paths to tune the SW properties in magnonic devices.…”

Section: Discussionmentioning

confidence: 99%

Néel domain wall as a tunable filter for optically excited magnetostatic waves

Khokhlov,

Khramova,

Filatov

et al. 2021

Preprint

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We present a concept of a tunable optical excitation of spin waves and filtering their spectra in a ferromagnetic film with 180 • Néel domain wall. We show by means of micromagnetic simulation that the fluence and position of the femtosecond laser pulse affect the frequencies of the excited spin waves, and the presence of the domain wall plays crucial role in controlling the spin waves' spectrum. The predicted effects are understood by analyzing the changes of the spin waves' dispersion under the impact of the laser pulse.

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Section: Discussionmentioning

confidence: 99%

Néel domain wall as a tunable filter for optically excited magnetostatic waves

Khokhlov,

Khramova,

Filatov

et al. 2021

Preprint

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“…The latter one enables the emission of short-wavelength SWs [15][16][17][18][19][20] and nonlinear interactions of SWs with the texture itself. [21][22][23][24] Magnetic domain walls can be used as ultra-narrow waveguides, 7,8,[25][26][27] phase shifters, 6,[28][29][30][31] or polarizers. 32 The SW dispersion relation in periodic magnetic textures is also periodic 33 and possesses bandgaps, 12,14,34 therefore, they can serve as magnonic crystals 35,36 with lattice constants down to tens of nanometers that are unattainable by other techniques.…”

Section: Introductionmentioning

confidence: 99%

Influence of Dzyaloshinskii–Moriya interaction and perpendicular anisotropy on spin waves propagation in stripe domain patterns and spin spirals

Gruszecki

Kisielewski

2022

Preprint

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Texture-based magnonics focuses on the utilization of spin waves in magnetization textures to process information. Using micromagnetic simulations, we study how (i) the dynamic magnetic susceptibility, (ii) dispersion relations, and (iii) the equilibrium magnetic configurations in periodic magnetization textures in ultrathin ferromagnetic films in remanence depend on the values of the Dzyaloshinskii–Moriya interaction and the perpendicular magnetocrystalline anisotropy. We observe that for large Dzyaloshinskii–Moriya interaction values, spin spirals with periods of tens of nanometers are the preferred state; for small Dzyaloshinskii–Moriya interaction and large anisotropies, stripe domain patterns with over a thousand times larger period are preferable. We observe and explain the selectivity of the excitation of resonant modes by a linearly polarized microwave field. We study the propagation of spin waves along and perpendicular to the direction of the periodicity. For propagation along the direction of the periodicity, we observe a band gap that closes and reopens, which is accompanied by a swap in the order of the bands. For waves propagating in the perpendicular direction, some modes can serve as unidirectional channels for spin waves. Overall, our findings are promising in sensing and signal processing applications and explain the fundamental properties of periodic magnetization textures.

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“…As a result, the scattered SWs are characterized by the frequencies f 0 + ν and f 0 − ν, and thus this phenomenon can be considered as inelastic scattering of SWs (ISSW) on domain-wall oscillations. This effect is analogous to the Bril-louin light scattering (BLS) by SWs, 19,27 with the incident and scattered electromagnetic waves replaced by SWs, and the SWs replaced by domain-wall 26 or skyrmion 28 oscillations.…”

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confidence: 96%

“…24 On the other hand, domain walls can be considered as very narrow nanosized channels for SWs, suitable for guiding waves even along curved paths, and they have therefore attracted much attention from the research community. 25 In our recent paper, 26 we presented a theoretical study of a three-SW interaction in a thin two-domain magnetic film with a single domain wall, when an incident SW of frequency f 0 interacts with domainwall flexure oscillations at frequency ν. As a result, the scattered SWs are characterized by the frequencies f 0 + ν and f 0 − ν, and thus this phenomenon can be considered as inelastic scattering of SWs (ISSW) on domain-wall oscillations.…”

mentioning

confidence: 99%

Inelastic spin-wave beam scattering by edge-localized spin waves in ferromagnetic thin film

Gruszecki¹,

Guslienko²,

Lyubchanskii³

et al. 2021

Preprint

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Spin waves (SWs) have promise as chargeless information carriers in energetically efficient beyond-CMOS systems. Among their many advantages are easy of obtaining nonlinearities and a variety of possible interactions of SWs with other types of excitations. While rapid advances in magnonic research have already yielded impressive results, the development of inter-modal nonlinear effects for propagating modes remains an open problem, as does scalability. In this paper, we study theoretically the dynamic interaction of SWs localized at the edge of a thin ferromagnetic film, with the SW beam incident at this edge. Among the reflected waves, we find inelastically scattered SW beams at frequencies increased and decreased by the frequency of the edge SW relative to the specular beam. This phenomenon of three-magnon interaction is a purely magnonic counterpart of Brillouin light scattering by SWs. We show that in this scattering process, the dynamic magnetostatic interactions are decisive, indicating the ubiquity of the process. Moreover, we observe an angular shift between the primary incident and the frequency-dependent reflected SW beams, which leads us to propose magnonic demultiplexing of the signal coded in the edge SWs.

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Inelastic Spin‐Wave Scattering by Bloch Domain Wall Flexure Oscillations

Cited by 8 publications

References 34 publications

Néel domain wall as a tunable filter for optically excited magnetostatic waves

Néel domain wall as a tunable filter for optically excited magnetostatic waves

Influence of Dzyaloshinskii–Moriya interaction and perpendicular anisotropy on spin waves propagation in stripe domain patterns and spin spirals

Inelastic spin-wave beam scattering by edge-localized spin waves in ferromagnetic thin film

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