Magnonic band structure in CoFeB/Ta/NiFe meander-shaped magnetic bilayers

Gubbiotti, G.; Садовников, А. В.; Бегинин, Е. Н.; Никитов, С. А.; Talmelli, Giacomo; Asselberghs, Inge; Radu, Iuliana; Adelmann, Christoph; Ciubotaru, Florin

doi:10.1063/5.0047737

Cited by 27 publications

(15 citation statements)

References 28 publications

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“…Magnon networks (MN), consisting of coupled systems of spin microwaveguides based on yttrium iron garnets (YIG) films, can be used for information processing and at the same time provide the process integration with the existing architecture of CMOS [2]. For instance, in the work [3] it was shown, that three-dimensional (3D) magnon crystal in a shape of meander can provide propagation of spin waves in all spatial dimensions.…”

Section: Introductionmentioning

confidence: 99%

Linear dynamics of spin waves in an array of YIG waveguides

Khutieva

Бегинин

Шешукова

et al. 2022

Physics of the Solid State

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The features of spin-wave transport in a system of coupled magnetic microwaveguides with perpendicular magnetization relative to the longitudinal axis of the system are considered. In this case, the system has uniaxial anisotropy, the horizontal and vertical coupling coefficients have different signs, and the isofrequency surfaces have a "saddle" shape. In the propagation of transversely limited beams of spin waves, the type of curvature of the wave fronts is determined by the direction of wave propagation relative to the external magnetic field. Keywords: spin waves, magnonics, microwaveguides, lateral structures.

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Section: Introductionmentioning

confidence: 99%

Linear dynamics of spin waves in an array of YIG waveguides

Khutieva

Бегинин

Шешукова

et al. 2022

Physics of the Solid State

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“…Curvilinear magnonics is part of the rapidly developing research field of 3D magnonics. [117][118][119][120][121] It relies on the use of 3D objects and offers the possibility to develop novel concepts, phenomena, devices and techniques as outlined in the 2021 Magnonics Roadmap. [122] Recently, curvilinear magnetism of nanowires and narribbons put forth a number of concepts for applications in curvilinear magnonics.…”

Section: Geometry-induced Effects In Spin Wave Dynamics: the Onset Of...mentioning

confidence: 99%

Fundamentals of Curvilinear Ferromagnetism: Statics and Dynamics of Geometrically Curved Wires and Narrow Ribbons

Sheka

Pylypovskyi

Volkov

et al. 2022

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quantum-mechanical particles constrained to a curved wire were found to be affected by the geometrical curvature and torsion, which are encoded in the quantum geometrical scalar [1,2] and vector [3,4] potentials. They cause a vast of intriguing phenomena at the nanoscale including topological band structure of electrons bound to periodic minimal surfaces, [5] winding-generated bound states in spirally rolled-up nanotubes, [6] torsion generated confinement of electron by the spin-orbit coupling in a nanoscale helical wire, [3] with some of these effects resulting in a chiral symmetry breaking. [3] Much attention is dedicated also to superconductivity in curved geometries. [7][8][9] Especially for chiral superconductors, where the physical implications of the geometric curvature results in the geometric Josephson effects, geometry-based superconducting quantum interference devices and radiators. [10] Curvilinear and 3D mesoscale systems are actively explored in other disciplines including quantum systems, [3,11] semiconductors (not only fundamental research but also current transistor technologies), [12][13][14] Dirac materials, [15,16] photonics, [17][18][19] and plasmonics [20][21][22] for intra-chip multilevel communication [23] as well as in liquid crystals, [24][25][26] microrobotics, [27][28][29] and magnetism. [30] Curvilinear magnetism encompasses a range of effects of geometrical curvature on magnetic responses of low-dimensional Low-dimensional magnetic architectures including wires and thin films are key enablers of prospective ultrafast and energy efficient memory, logic, and sensor devices relying on spin-orbitronic and magnonic concepts. Curvilinear magnetism emerged as a novel approach in material science, which allows tailoring of the fundamental anisotropic and chiral responses relying on the geometrical curvature of magnetic architectures. Much attention is dedicated to magnetic wires of Möbius, helical, or DNA-like double helical shapes, which act as prototypical objects for the exploration of the fundamentals of curvilinear magnetism. Although there is a bulk number of original publications covering fabrication, characterization, and theory of magnetic wires, there is no comprehensive review of the theoretical framework of how to describe these architectures. Here, theoretical activities on the topic of curvilinear magnetic wires and narrow nanoribbons are summarized, providing a systematic review of the emergent interactions and novel physical effects caused by the curvature. Prospective research directions of curvilinear spintronics and spin-orbitronics are discussed, the fundamental framework for curvilinear magnonics are outlined, and mechanically flexible curvilinear architectures for soft robotics are introduced.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.202105219.

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“…2), leading to moderate values of chirp detectable reliably at L larger than 10 µm only. To make the effect more prominent at smaller distances, it is possible to use magnonic crystals, multilayered structures, or their hybrids [43][44][45] with a high dispersion of the group velocity of SWs. On the flipside, the geometrical design of the waveguide paves the way to suppress the dispersion altogether 46,47 .…”

Section: Please Cite This Article Asmentioning

confidence: 99%

Spectrum evolution and chirping of laser-induced spin wave packets in thin iron films

Филатов

Gerevenkov

Wang

et al. 2022

Applied Physics Letters

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We present an experimental study of ultrafast optical excitation of magnetostatic surface spin wave (MSSW) packets and their spectral properties in thin films of pure iron. As the packets leave the excitation area and propagate in space, their spectra evolve non-trivially. Particularly, low or high frequency components are suppressed at the border of the excitation area depending on the orientation of the external magnetic field with respect to the magnetocrystalline anisotropy axes of the film. The effect is ascribed to the ultrafast local heating of the film. Furthermore, the time resolution of the implemented all-optical technique allows us to extract the chirp of the MSSW packet in the time domain via wavelet analysis. The chirp is a result of the group velocity dispersion of the MSSW and, thus, is controlled by the film's magnetic parameters, magnetization and anisotropy, and external field orientation. The demonstrated tunable modulation of MSSW wave packets with femtosecond laser pulses may find application in future magnonic-photonic hybrid devices for wave-based data processing.

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Magnonic band structure in CoFeB/Ta/NiFe meander-shaped magnetic bilayers

Cited by 27 publications

References 28 publications

Linear dynamics of spin waves in an array of YIG waveguides

Linear dynamics of spin waves in an array of YIG waveguides

Fundamentals of Curvilinear Ferromagnetism: Statics and Dynamics of Geometrically Curved Wires and Narrow Ribbons

Spectrum evolution and chirping of laser-induced spin wave packets in thin iron films

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